/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:23:23,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:23:23,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:23:23,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:23:23,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:23:23,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:23:23,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:23:23,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:23:23,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:23:23,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:23:23,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:23:23,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:23:23,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:23:23,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:23:23,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:23:23,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:23:23,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:23:23,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:23:23,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:23:23,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:23:23,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:23:23,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:23:23,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:23:23,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:23:23,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:23:23,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:23:23,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:23:23,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:23:23,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:23:23,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:23:23,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:23:23,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:23:23,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:23:23,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:23:23,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:23:23,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:23:23,426 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:23:23,426 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:23:23,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:23:23,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:23:23,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:23:23,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:23:23,691 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:23:23,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c [2021-05-06 06:23:23,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be16c0e6f/31265f8c681d4308b644388ed1c3e7ab/FLAG84a1edfa1 [2021-05-06 06:23:24,074 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:23:24,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c [2021-05-06 06:23:24,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be16c0e6f/31265f8c681d4308b644388ed1c3e7ab/FLAG84a1edfa1 [2021-05-06 06:23:24,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be16c0e6f/31265f8c681d4308b644388ed1c3e7ab [2021-05-06 06:23:24,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:23:24,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:23:24,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:23:24,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:23:24,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:23:24,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219da21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24, skipping insertion in model container [2021-05-06 06:23:24,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:23:24,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:23:24,615 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c[318,331] [2021-05-06 06:23:24,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:23:24,636 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:23:24,643 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c[318,331] [2021-05-06 06:23:24,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:23:24,660 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:23:24,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24 WrapperNode [2021-05-06 06:23:24,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:23:24,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:23:24,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:23:24,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:23:24,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... [2021-05-06 06:23:24,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:23:24,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:23:24,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:23:24,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:23:24,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:23:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:23:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:23:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:23:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:23:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:23:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:23:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:23:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:23:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:23:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:23:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:23:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:23:25,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:23:25,021 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 06:23:25,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:25 BoogieIcfgContainer [2021-05-06 06:23:25,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:23:25,023 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:23:25,023 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:23:25,023 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:23:25,025 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:25" (1/1) ... [2021-05-06 06:23:25,076 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 83.9 percent of original size [2021-05-06 06:23:25,179 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 83.9 percent of original size 52 [2021-05-06 06:23:25,216 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:23:25,217 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~z~0_1 v_main_~y~0_2) (= v_main_~y~0_2 (+ v_main_~y~0_1 1)) (= v_main_~x~0_3 (+ v_main_~x~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_2} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_1, main_#t~post11=|v_main_#t~post11_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~y~0, main_#t~post11] to Formula: (or (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_main_~y~0_2 v_main_~y~0_1) (= v_itFin_1 0) (= |v_main_#t~post11_3| |v_main_#t~post11_1|) (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (<= v_main_~y~0_2 v_main_~z~0_1)) (and (= v_main_~x~0_3 (+ v_itFin_1 v_main_~x~0_2)) (< 0 v_itFin_1) (= v_main_~y~0_2 (+ v_itFin_1 v_main_~y~0_1)) (< (+ v_itFin_1 v_main_~z~0_1) (+ v_main_~y~0_2 1)))) InVars {main_~y~0=v_main_~y~0_2, main_#t~post10=|v_main_#t~post10_3|, main_~x~0=v_main_~x~0_3, main_#t~post11=|v_main_#t~post11_3|, main_~z~0=v_main_~z~0_1} OutVars{main_~y~0=v_main_~y~0_1, main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_#t~post11=|v_main_#t~post11_1|, main_~z~0=v_main_~z~0_1} AuxVars[v_itFin_1] AssignedVars[main_#t~post10, main_~x~0, main_~y~0, main_#t~post11] [2021-05-06 06:23:25,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:23:25 BasicIcfg [2021-05-06 06:23:25,221 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:23:25,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:23:25,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:23:25,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:23:25,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:23:24" (1/4) ... [2021-05-06 06:23:25,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ecab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:23:25, skipping insertion in model container [2021-05-06 06:23:25,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:24" (2/4) ... [2021-05-06 06:23:25,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ecab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:23:25, skipping insertion in model container [2021-05-06 06:23:25,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:25" (3/4) ... [2021-05-06 06:23:25,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ecab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:23:25, skipping insertion in model container [2021-05-06 06:23:25,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:23:25" (4/4) ... [2021-05-06 06:23:25,234 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_1.cJordan [2021-05-06 06:23:25,237 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:23:25,239 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:23:25,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:23:25,271 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:23:25,271 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:23:25,271 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:23:25,271 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:23:25,272 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:23:25,272 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:23:25,272 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:23:25,272 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:23:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:23:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:23:25,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:25,287 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:25,288 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-06 06:23:25,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:25,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254032414] [2021-05-06 06:23:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:25,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:25,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254032414] [2021-05-06 06:23:25,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254032414] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:25,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:25,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:23:25,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249284478] [2021-05-06 06:23:25,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:23:25,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:23:25,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:23:25,457 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:25,517 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 06:23:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:23:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:23:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:25,523 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:23:25,523 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:23:25,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:23:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:23:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:23:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-06 06:23:25,556 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-06 06:23:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:25,556 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-06 06:23:25,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-06 06:23:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:23:25,557 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:25,557 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:25,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:23:25,558 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:25,558 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-06 06:23:25,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:25,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187517153] [2021-05-06 06:23:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:25,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:25,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187517153] [2021-05-06 06:23:25,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187517153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:25,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:25,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:23:25,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677617157] [2021-05-06 06:23:25,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:23:25,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:25,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:23:25,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:23:25,660 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:25,726 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-06 06:23:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:23:25,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:23:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:25,727 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:23:25,728 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:23:25,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:23:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:23:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 06:23:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 06:23:25,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-06 06:23:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:25,731 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 06:23:25,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 06:23:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:23:25,731 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:25,731 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:25,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:23:25,732 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-06 06:23:25,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:25,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600762858] [2021-05-06 06:23:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:25,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:25,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600762858] [2021-05-06 06:23:25,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600762858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:25,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:25,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:23:25,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824824465] [2021-05-06 06:23:25,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:23:25,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:25,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:23:25,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:23:25,788 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:25,842 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-06 06:23:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:23:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 06:23:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:25,843 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:23:25,843 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 06:23:25,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:23:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 06:23:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 06:23:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 06:23:25,848 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-06 06:23:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:25,848 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 06:23:25,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 06:23:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:23:25,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:25,848 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:25,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 06:23:25,849 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:25,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-06 06:23:25,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:25,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551455934] [2021-05-06 06:23:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:25,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:25,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551455934] [2021-05-06 06:23:25,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551455934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:25,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25465134] [2021-05-06 06:23:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:23:25,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:25,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:26,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25465134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:26,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:26,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-06 06:23:26,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343615166] [2021-05-06 06:23:26,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:23:26,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:26,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:23:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:23:26,014 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:26,085 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:23:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:23:26,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 06:23:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:26,086 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:23:26,086 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 06:23:26,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:23:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 06:23:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 06:23:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 06:23:26,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-06 06:23:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:26,089 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 06:23:26,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 06:23:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:23:26,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:26,090 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:26,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:26,305 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-06 06:23:26,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:26,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297361788] [2021-05-06 06:23:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-06 06:23:26,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:26,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297361788] [2021-05-06 06:23:26,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297361788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:26,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:26,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:23:26,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513506613] [2021-05-06 06:23:26,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:23:26,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:26,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:23:26,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:23:26,349 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:26,388 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-06 06:23:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:23:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-06 06:23:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:26,389 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:23:26,389 INFO L226 Difference]: Without dead ends: 21 [2021-05-06 06:23:26,390 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:23:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-06 06:23:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-06 06:23:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-06 06:23:26,392 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-06 06:23:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:26,392 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-06 06:23:26,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-06 06:23:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 06:23:26,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:26,393 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:26,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 06:23:26,393 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-06 06:23:26,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:26,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808251760] [2021-05-06 06:23:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:26,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:26,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808251760] [2021-05-06 06:23:26,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808251760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:26,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481792579] [2021-05-06 06:23:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:23:26,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:26,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:26,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481792579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:26,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:26,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-06 06:23:26,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406305112] [2021-05-06 06:23:26,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:23:26,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:26,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:23:26,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:23:26,595 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:26,690 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-06 06:23:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:23:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-06 06:23:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:26,692 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:23:26,692 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 06:23:26,693 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:23:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 06:23:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 06:23:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-06 06:23:26,697 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-06 06:23:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:26,698 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-06 06:23:26,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-06 06:23:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 06:23:26,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:26,698 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:26,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:26,921 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-06 06:23:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:26,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056998006] [2021-05-06 06:23:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:27,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:27,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056998006] [2021-05-06 06:23:27,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056998006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:27,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175770615] [2021-05-06 06:23:27,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:27,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:23:27,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:27,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:23:27,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:27,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:27,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175770615] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:27,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:27,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 06:23:27,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413353550] [2021-05-06 06:23:27,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:23:27,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:23:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:23:27,093 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:27,216 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-06 06:23:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:23:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-06 06:23:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:27,217 INFO L225 Difference]: With dead ends: 24 [2021-05-06 06:23:27,217 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 06:23:27,217 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:23:27,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 06:23:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-06 06:23:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-06 06:23:27,219 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-06 06:23:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:27,219 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-06 06:23:27,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-06 06:23:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 06:23:27,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:27,220 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:27,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:27,433 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:27,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:27,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-06 06:23:27,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:27,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134264271] [2021-05-06 06:23:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:27,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:27,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134264271] [2021-05-06 06:23:27,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134264271] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:27,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580258986] [2021-05-06 06:23:27,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:27,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 06:23:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:23:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-06 06:23:27,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580258986] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:27,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:27,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-06 06:23:27,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381336372] [2021-05-06 06:23:27,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:23:27,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:27,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:23:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:23:27,617 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:27,822 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-06 06:23:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:23:27,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-06 06:23:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:27,823 INFO L225 Difference]: With dead ends: 29 [2021-05-06 06:23:27,824 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 06:23:27,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-06 06:23:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 06:23:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-06 06:23:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-06 06:23:27,826 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-06 06:23:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:27,826 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-06 06:23:27,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-06 06:23:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 06:23:27,827 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:27,827 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:28,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:28,048 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-06 06:23:28,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:28,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261176269] [2021-05-06 06:23:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:28,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:28,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261176269] [2021-05-06 06:23:28,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261176269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:28,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377738582] [2021-05-06 06:23:28,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:28,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:23:28,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:23:28,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:28,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:28,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377738582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:28,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:28,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-06 06:23:28,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522004790] [2021-05-06 06:23:28,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:23:28,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:23:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:23:28,253 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:28,396 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-06 06:23:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:23:28,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-06 06:23:28,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:28,397 INFO L225 Difference]: With dead ends: 30 [2021-05-06 06:23:28,397 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 06:23:28,397 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:23:28,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 06:23:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 06:23:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 06:23:28,399 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-06 06:23:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:28,399 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 06:23:28,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 06:23:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 06:23:28,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:28,400 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:28,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:28,609 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:28,609 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-06 06:23:28,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:28,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138608226] [2021-05-06 06:23:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:28,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:28,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138608226] [2021-05-06 06:23:28,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138608226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:28,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661422128] [2021-05-06 06:23:28,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:28,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-06 06:23:28,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:28,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:23:28,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:28,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:28,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661422128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:28,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:28,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-06 06:23:28,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306271347] [2021-05-06 06:23:28,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 06:23:28,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:28,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 06:23:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:23:28,815 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:29,012 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-06 06:23:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:23:29,012 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-06 06:23:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:29,013 INFO L225 Difference]: With dead ends: 32 [2021-05-06 06:23:29,013 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 06:23:29,013 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 182.1ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:23:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 06:23:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 06:23:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-06 06:23:29,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-06 06:23:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:29,015 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-06 06:23:29,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-06 06:23:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-06 06:23:29,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:29,016 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:29,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:29,231 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:29,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-06 06:23:29,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:29,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673551591] [2021-05-06 06:23:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:29,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:29,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673551591] [2021-05-06 06:23:29,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673551591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:29,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124138087] [2021-05-06 06:23:29,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:29,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-06 06:23:29,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:29,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:23:29,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:29,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:23:29,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124138087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:29,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:29,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-06 06:23:29,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131287006] [2021-05-06 06:23:29,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 06:23:29,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 06:23:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 06:23:29,443 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:29,699 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 06:23:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 06:23:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-06 06:23:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:29,700 INFO L225 Difference]: With dead ends: 38 [2021-05-06 06:23:29,701 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 06:23:29,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 258.5ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:23:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 06:23:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 06:23:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 06:23:29,703 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-06 06:23:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:29,703 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 06:23:29,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 06:23:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 06:23:29,704 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:29,704 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:29,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:29,917 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:29,917 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-06 06:23:29,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:29,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567826283] [2021-05-06 06:23:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:30,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:30,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567826283] [2021-05-06 06:23:30,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567826283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:30,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671619376] [2021-05-06 06:23:30,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:30,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:23:30,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:30,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:30,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671619376] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:30,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:30,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-06 06:23:30,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739491193] [2021-05-06 06:23:30,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 06:23:30,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 06:23:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:23:30,139 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:30,459 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-06 06:23:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 06:23:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-06 06:23:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:30,460 INFO L225 Difference]: With dead ends: 40 [2021-05-06 06:23:30,460 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 06:23:30,461 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 289.1ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-06 06:23:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 06:23:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-06 06:23:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-06 06:23:30,463 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-06 06:23:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:30,463 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-06 06:23:30,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-06 06:23:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:23:30,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:30,464 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:30,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 06:23:30,665 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:30,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-06 06:23:30,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:30,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63281357] [2021-05-06 06:23:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:30,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:30,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:30,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63281357] [2021-05-06 06:23:30,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63281357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:30,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051318485] [2021-05-06 06:23:30,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:30,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:23:30,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:30,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:23:30,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:30,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051318485] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:30,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:30,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-06 06:23:30,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625437337] [2021-05-06 06:23:30,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 06:23:30,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 06:23:30,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:23:30,920 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:31,264 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-06 06:23:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 06:23:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-06 06:23:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:31,269 INFO L225 Difference]: With dead ends: 42 [2021-05-06 06:23:31,269 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 06:23:31,269 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 345.0ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:23:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 06:23:31,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-06 06:23:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-06 06:23:31,271 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-06 06:23:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:31,271 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-06 06:23:31,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-06 06:23:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 06:23:31,272 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:31,272 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:31,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:31,473 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-06 06:23:31,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:31,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38446244] [2021-05-06 06:23:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:23:31,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:31,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38446244] [2021-05-06 06:23:31,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38446244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:31,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935858449] [2021-05-06 06:23:31,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:31,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-06 06:23:31,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:23:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-05-06 06:23:31,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935858449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:31,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:31,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-06 06:23:31,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581902307] [2021-05-06 06:23:31,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:23:31,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:31,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:23:31,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:23:31,723 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:32,164 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-06 06:23:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 06:23:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-06 06:23:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:32,165 INFO L225 Difference]: With dead ends: 47 [2021-05-06 06:23:32,165 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 06:23:32,166 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 469.2ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:23:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 06:23:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-06 06:23:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-06 06:23:32,168 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-06 06:23:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:32,168 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-06 06:23:32,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-06 06:23:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 06:23:32,169 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:32,169 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:32,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:32,376 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-06 06:23:32,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:32,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437241759] [2021-05-06 06:23:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:23:32,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:32,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437241759] [2021-05-06 06:23:32,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437241759] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:32,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689857841] [2021-05-06 06:23:32,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:32,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:23:32,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:23:32,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:32,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:23:32,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689857841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:32,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:32,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-06 06:23:32,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660074330] [2021-05-06 06:23:32,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 06:23:32,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 06:23:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:23:32,628 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:32,989 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-06 06:23:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 06:23:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-06 06:23:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:32,990 INFO L225 Difference]: With dead ends: 48 [2021-05-06 06:23:32,990 INFO L226 Difference]: Without dead ends: 48 [2021-05-06 06:23:32,990 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 375.0ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-06 06:23:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-06 06:23:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-06 06:23:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-06 06:23:32,992 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-06 06:23:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:32,992 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-06 06:23:32,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-06 06:23:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 06:23:32,993 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:32,993 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:33,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 06:23:33,215 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-06 06:23:33,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:33,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202099211] [2021-05-06 06:23:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:23:33,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:33,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202099211] [2021-05-06 06:23:33,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202099211] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:33,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742424807] [2021-05-06 06:23:33,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:33,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 06:23:33,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:33,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:23:33,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:33,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:23:33,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742424807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:33,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:33,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-06 06:23:33,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805336139] [2021-05-06 06:23:33,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:23:33,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:23:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:23:33,489 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:33,902 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-06 06:23:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 06:23:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-06 06:23:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:33,903 INFO L225 Difference]: With dead ends: 50 [2021-05-06 06:23:33,903 INFO L226 Difference]: Without dead ends: 50 [2021-05-06 06:23:33,903 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 434.9ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:23:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-06 06:23:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-06 06:23:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-06 06:23:33,908 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-06 06:23:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:33,908 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-06 06:23:33,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-06 06:23:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-06 06:23:33,909 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:33,909 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:34,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 06:23:34,120 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:34,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-06 06:23:34,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:34,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741747282] [2021-05-06 06:23:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:23:34,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:34,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741747282] [2021-05-06 06:23:34,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741747282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:34,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180933678] [2021-05-06 06:23:34,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:34,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-06 06:23:34,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:34,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 06:23:34,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:34,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-06 06:23:34,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180933678] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:34,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:34,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-06 06:23:34,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372810466] [2021-05-06 06:23:34,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 06:23:34,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:34,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 06:23:34,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 06:23:34,468 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:35,010 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-06 06:23:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:23:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-06 06:23:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:35,011 INFO L225 Difference]: With dead ends: 55 [2021-05-06 06:23:35,011 INFO L226 Difference]: Without dead ends: 55 [2021-05-06 06:23:35,012 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 626.9ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:23:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-06 06:23:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-06 06:23:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-06 06:23:35,015 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-06 06:23:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:35,015 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-06 06:23:35,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-06 06:23:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 06:23:35,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:35,016 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:35,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 06:23:35,221 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-06 06:23:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:35,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746969853] [2021-05-06 06:23:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:23:35,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:35,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746969853] [2021-05-06 06:23:35,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746969853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:35,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645792944] [2021-05-06 06:23:35,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:23:35,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:35,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:23:35,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645792944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:35,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:35,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-06 06:23:35,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027286348] [2021-05-06 06:23:35,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 06:23:35,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:35,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 06:23:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 06:23:35,541 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:36,003 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 06:23:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 06:23:36,003 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-06 06:23:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:36,004 INFO L225 Difference]: With dead ends: 56 [2021-05-06 06:23:36,004 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 06:23:36,004 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 506.9ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 06:23:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 06:23:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 06:23:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 06:23:36,006 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-06 06:23:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:36,006 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 06:23:36,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 06:23:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-06 06:23:36,007 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:36,007 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:36,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:36,221 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-06 06:23:36,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:36,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125418319] [2021-05-06 06:23:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:23:36,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:36,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125418319] [2021-05-06 06:23:36,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125418319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:36,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059144926] [2021-05-06 06:23:36,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:36,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:23:36,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:36,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:23:36,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:36,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:23:36,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059144926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:36,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:36,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-06 06:23:36,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578389211] [2021-05-06 06:23:36,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 06:23:36,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 06:23:36,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 06:23:36,525 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:36,984 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-06 06:23:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 06:23:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-06 06:23:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:36,985 INFO L225 Difference]: With dead ends: 58 [2021-05-06 06:23:36,985 INFO L226 Difference]: Without dead ends: 58 [2021-05-06 06:23:36,986 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 538.0ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:23:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-06 06:23:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-06 06:23:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-06 06:23:36,987 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-06 06:23:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:36,988 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-06 06:23:36,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-06 06:23:36,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-06 06:23:36,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:36,988 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:37,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:37,205 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-06 06:23:37,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:37,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542708942] [2021-05-06 06:23:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:23:37,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:37,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542708942] [2021-05-06 06:23:37,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542708942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:37,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245515242] [2021-05-06 06:23:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:37,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 06:23:37,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:37,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:23:37,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-05-06 06:23:37,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245515242] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:37,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:37,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-06 06:23:37,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557527590] [2021-05-06 06:23:37,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:23:37,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:23:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:23:37,617 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:38,373 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-06 06:23:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:23:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-06 06:23:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:38,374 INFO L225 Difference]: With dead ends: 63 [2021-05-06 06:23:38,374 INFO L226 Difference]: Without dead ends: 63 [2021-05-06 06:23:38,375 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 852.9ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:23:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-06 06:23:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-06 06:23:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-06 06:23:38,377 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-06 06:23:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:38,377 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-06 06:23:38,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-06 06:23:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 06:23:38,378 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:38,378 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:38,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:38,582 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-06 06:23:38,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:38,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532081899] [2021-05-06 06:23:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:23:38,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:38,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532081899] [2021-05-06 06:23:38,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532081899] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:38,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445493392] [2021-05-06 06:23:38,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:38,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:23:38,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:38,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:23:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:23:38,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445493392] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:38,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:38,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-06 06:23:38,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919089566] [2021-05-06 06:23:38,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 06:23:38,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:38,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 06:23:38,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:23:38,951 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:39,540 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-06 06:23:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:23:39,540 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-06 06:23:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:39,541 INFO L225 Difference]: With dead ends: 64 [2021-05-06 06:23:39,541 INFO L226 Difference]: Without dead ends: 64 [2021-05-06 06:23:39,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 644.0ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 06:23:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-06 06:23:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-06 06:23:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-06 06:23:39,543 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-06 06:23:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:39,544 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-06 06:23:39,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-06 06:23:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 06:23:39,544 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:39,544 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:39,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 06:23:39,752 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:39,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-06 06:23:39,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:39,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618605191] [2021-05-06 06:23:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:23:39,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:39,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618605191] [2021-05-06 06:23:39,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618605191] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:39,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250814852] [2021-05-06 06:23:39,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:40,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-06 06:23:40,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:40,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:23:40,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:23:40,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250814852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:40,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:40,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-06 06:23:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569877490] [2021-05-06 06:23:40,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 06:23:40,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 06:23:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 06:23:40,147 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:40,702 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-06 06:23:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 06:23:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-06 06:23:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:40,703 INFO L225 Difference]: With dead ends: 66 [2021-05-06 06:23:40,703 INFO L226 Difference]: Without dead ends: 66 [2021-05-06 06:23:40,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 655.8ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:23:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-06 06:23:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-06 06:23:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-06 06:23:40,705 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-06 06:23:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:40,706 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-06 06:23:40,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-06 06:23:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-06 06:23:40,706 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:40,706 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:40,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 06:23:40,921 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:40,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:40,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-06 06:23:40,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:40,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303683317] [2021-05-06 06:23:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:23:41,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:41,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303683317] [2021-05-06 06:23:41,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303683317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:41,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387548734] [2021-05-06 06:23:41,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:41,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-06 06:23:41,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:41,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:23:41,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:41,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-05-06 06:23:41,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387548734] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:41,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:41,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-06 06:23:41,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252628587] [2021-05-06 06:23:41,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:23:41,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:41,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:23:41,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:23:41,391 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:42,240 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-06 06:23:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 06:23:42,241 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-06 06:23:42,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:42,241 INFO L225 Difference]: With dead ends: 71 [2021-05-06 06:23:42,241 INFO L226 Difference]: Without dead ends: 71 [2021-05-06 06:23:42,242 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1031.7ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:23:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-06 06:23:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-06 06:23:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-06 06:23:42,243 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-06 06:23:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:42,244 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-06 06:23:42,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-06 06:23:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 06:23:42,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:42,244 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:42,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-06 06:23:42,453 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-06 06:23:42,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:42,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624315273] [2021-05-06 06:23:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:23:42,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:42,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624315273] [2021-05-06 06:23:42,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624315273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:42,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837113935] [2021-05-06 06:23:42,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:42,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:23:42,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:42,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:23:42,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837113935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:42,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:42,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-06 06:23:42,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408415157] [2021-05-06 06:23:42,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:23:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:42,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:23:42,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:23:42,865 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:43,517 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-06 06:23:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 06:23:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-06 06:23:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:43,518 INFO L225 Difference]: With dead ends: 72 [2021-05-06 06:23:43,518 INFO L226 Difference]: Without dead ends: 72 [2021-05-06 06:23:43,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 754.6ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 06:23:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-06 06:23:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-06 06:23:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-06 06:23:43,520 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-06 06:23:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:43,520 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-06 06:23:43,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-06 06:23:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-06 06:23:43,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:43,521 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:43,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 06:23:43,737 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-06 06:23:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:43,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331408895] [2021-05-06 06:23:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:23:43,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:43,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331408895] [2021-05-06 06:23:43,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331408895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:43,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033189702] [2021-05-06 06:23:43,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:44,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:23:44,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:23:44,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:44,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:23:44,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033189702] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:44,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:44,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-06 06:23:44,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291649265] [2021-05-06 06:23:44,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 06:23:44,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:44,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 06:23:44,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:23:44,127 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:44,852 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 06:23:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:23:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-06 06:23:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:44,853 INFO L225 Difference]: With dead ends: 74 [2021-05-06 06:23:44,853 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 06:23:44,854 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 784.4ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:23:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 06:23:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 06:23:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 06:23:44,855 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-06 06:23:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:44,855 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 06:23:44,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 06:23:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-06 06:23:44,856 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:44,856 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:45,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-06 06:23:45,057 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-06 06:23:45,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:45,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50393421] [2021-05-06 06:23:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:23:45,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:45,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50393421] [2021-05-06 06:23:45,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50393421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:45,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998350746] [2021-05-06 06:23:45,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:45,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-06 06:23:45,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:45,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:23:45,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:45,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-05-06 06:23:45,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998350746] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:45,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:45,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-06 06:23:45,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539661723] [2021-05-06 06:23:45,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 06:23:45,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 06:23:45,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:23:45,614 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:46,610 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-06 06:23:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:23:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-06 06:23:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:46,611 INFO L225 Difference]: With dead ends: 79 [2021-05-06 06:23:46,611 INFO L226 Difference]: Without dead ends: 79 [2021-05-06 06:23:46,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1258.5ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:23:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-06 06:23:46,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-06 06:23:46,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-06 06:23:46,614 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-06 06:23:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:46,614 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-06 06:23:46,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-06 06:23:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 06:23:46,614 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:46,615 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:46,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:46,829 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-06 06:23:46,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:46,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888966042] [2021-05-06 06:23:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:23:47,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:47,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888966042] [2021-05-06 06:23:47,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888966042] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:47,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919207566] [2021-05-06 06:23:47,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:47,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:23:47,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:47,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:23:47,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:23:47,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919207566] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:47,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:47,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-06 06:23:47,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671512662] [2021-05-06 06:23:47,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 06:23:47,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:47,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 06:23:47,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 06:23:47,276 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:48,057 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-06 06:23:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 06:23:48,057 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-06 06:23:48,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:48,058 INFO L225 Difference]: With dead ends: 80 [2021-05-06 06:23:48,058 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 06:23:48,058 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 887.7ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 06:23:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 06:23:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-06 06:23:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-06 06:23:48,060 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-06 06:23:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:48,060 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-06 06:23:48,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-06 06:23:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-06 06:23:48,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:48,061 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:48,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 06:23:48,273 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-06 06:23:48,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:48,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709709621] [2021-05-06 06:23:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:48,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:23:48,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:48,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709709621] [2021-05-06 06:23:48,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709709621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:48,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927599060] [2021-05-06 06:23:48,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:48,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-06 06:23:48,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:48,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:23:48,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:48,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:23:48,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927599060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:48,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:48,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-06 06:23:48,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515096239] [2021-05-06 06:23:48,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:23:48,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:48,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:23:48,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:23:48,760 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:49,587 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-06 06:23:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 06:23:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-06 06:23:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:49,588 INFO L225 Difference]: With dead ends: 82 [2021-05-06 06:23:49,588 INFO L226 Difference]: Without dead ends: 82 [2021-05-06 06:23:49,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 957.2ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:23:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-06 06:23:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-06 06:23:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-06 06:23:49,590 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-06 06:23:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:49,590 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-06 06:23:49,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-06 06:23:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 06:23:49,591 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:49,591 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:49,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:49,791 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-06 06:23:49,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:49,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779257085] [2021-05-06 06:23:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:23:50,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:50,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779257085] [2021-05-06 06:23:50,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779257085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:50,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226027659] [2021-05-06 06:23:50,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:50,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 06:23:50,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:23:50,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:50,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-05-06 06:23:50,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226027659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:50,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:50,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-06 06:23:50,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831336537] [2021-05-06 06:23:50,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:23:50,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:23:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:23:50,462 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:51,679 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-06 06:23:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:23:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-06 06:23:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:51,680 INFO L225 Difference]: With dead ends: 87 [2021-05-06 06:23:51,680 INFO L226 Difference]: Without dead ends: 87 [2021-05-06 06:23:51,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1520.1ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:23:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-06 06:23:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-06 06:23:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-06 06:23:51,682 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-06 06:23:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:51,682 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-06 06:23:51,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-06 06:23:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 06:23:51,683 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:51,683 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:51,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 06:23:51,885 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-06 06:23:51,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:51,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443740277] [2021-05-06 06:23:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:23:52,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:52,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443740277] [2021-05-06 06:23:52,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443740277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:52,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673707337] [2021-05-06 06:23:52,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:52,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:23:52,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:52,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:23:52,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673707337] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:52,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:52,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-06 06:23:52,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941401205] [2021-05-06 06:23:52,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 06:23:52,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:52,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 06:23:52,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 06:23:52,411 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:53,266 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-06 06:23:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 06:23:53,266 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-06 06:23:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:53,267 INFO L225 Difference]: With dead ends: 88 [2021-05-06 06:23:53,267 INFO L226 Difference]: Without dead ends: 88 [2021-05-06 06:23:53,268 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1051.4ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 06:23:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-06 06:23:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-06 06:23:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 83 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-06 06:23:53,269 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-06 06:23:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:53,270 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-06 06:23:53,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-06 06:23:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-06 06:23:53,270 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:53,270 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:53,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:53,485 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-06 06:23:53,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:53,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436256661] [2021-05-06 06:23:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:23:53,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:53,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436256661] [2021-05-06 06:23:53,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436256661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:53,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994706545] [2021-05-06 06:23:53,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:53,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:23:53,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:53,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:23:53,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:53,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:23:54,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994706545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:54,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:54,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-06 06:23:54,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118610955] [2021-05-06 06:23:54,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 06:23:54,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:54,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 06:23:54,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:23:54,042 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:55,028 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-06 06:23:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 06:23:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-06 06:23:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:55,029 INFO L225 Difference]: With dead ends: 90 [2021-05-06 06:23:55,029 INFO L226 Difference]: Without dead ends: 90 [2021-05-06 06:23:55,029 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1147.1ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:23:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-06 06:23:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-06 06:23:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-06 06:23:55,031 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-06 06:23:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:55,031 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-06 06:23:55,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-06 06:23:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-06 06:23:55,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:55,032 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:55,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-06 06:23:55,245 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-06 06:23:55,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:55,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146414896] [2021-05-06 06:23:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:23:55,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:55,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146414896] [2021-05-06 06:23:55,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146414896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:55,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540024494] [2021-05-06 06:23:55,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:55,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-06 06:23:55,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:55,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:23:55,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:55,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-05-06 06:23:56,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540024494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:56,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:56,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-06 06:23:56,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795379819] [2021-05-06 06:23:56,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:23:56,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:56,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:23:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:23:56,004 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:57,445 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-06 06:23:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 06:23:57,446 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-06 06:23:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:57,446 INFO L225 Difference]: With dead ends: 95 [2021-05-06 06:23:57,446 INFO L226 Difference]: Without dead ends: 95 [2021-05-06 06:23:57,447 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1829.7ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:23:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-06 06:23:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-06 06:23:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-06 06:23:57,448 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-06 06:23:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:57,448 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-06 06:23:57,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-06 06:23:57,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 06:23:57,449 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:57,449 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:57,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:57,649 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-06 06:23:57,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:57,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258896780] [2021-05-06 06:23:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:23:58,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:58,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258896780] [2021-05-06 06:23:58,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258896780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:58,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905471726] [2021-05-06 06:23:58,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:58,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:23:58,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:58,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:23:58,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:23:58,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905471726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:58,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:58,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-06 06:23:58,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129662673] [2021-05-06 06:23:58,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 06:23:58,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 06:23:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 06:23:58,270 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:59,242 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-06 06:23:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:23:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-06 06:23:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:59,243 INFO L225 Difference]: With dead ends: 96 [2021-05-06 06:23:59,243 INFO L226 Difference]: Without dead ends: 96 [2021-05-06 06:23:59,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1253.5ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 06:23:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-06 06:23:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-06 06:23:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-06 06:23:59,245 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-06 06:23:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:59,245 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-06 06:23:59,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-06 06:23:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 06:23:59,246 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:59,246 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:59,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 06:23:59,461 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-06 06:23:59,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:59,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759631289] [2021-05-06 06:23:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:23:59,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:59,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759631289] [2021-05-06 06:23:59,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759631289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:59,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30505845] [2021-05-06 06:23:59,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:23:59,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 06:23:59,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:23:59,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:23:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:59,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:59,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:24:00,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30505845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:00,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:00,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-06 06:24:00,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313255921] [2021-05-06 06:24:00,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 06:24:00,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 06:24:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 06:24:00,064 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:01,131 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-06 06:24:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 06:24:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-06 06:24:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:01,132 INFO L225 Difference]: With dead ends: 98 [2021-05-06 06:24:01,132 INFO L226 Difference]: Without dead ends: 98 [2021-05-06 06:24:01,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1277.9ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:24:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-06 06:24:01,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-06 06:24:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-06 06:24:01,134 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-06 06:24:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:01,134 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-06 06:24:01,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-06 06:24:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-06 06:24:01,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:01,134 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:01,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:01,351 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-06 06:24:01,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:01,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000323692] [2021-05-06 06:24:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:24:01,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:01,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000323692] [2021-05-06 06:24:01,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000323692] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:01,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54350483] [2021-05-06 06:24:01,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:01,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-06 06:24:01,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:01,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:24:01,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:01,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:01,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:01,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:01,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:01,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-05-06 06:24:02,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54350483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:02,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:02,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-06 06:24:02,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638979173] [2021-05-06 06:24:02,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 06:24:02,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 06:24:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 06:24:02,248 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:03,885 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-06 06:24:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:24:03,885 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-06 06:24:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:03,886 INFO L225 Difference]: With dead ends: 103 [2021-05-06 06:24:03,886 INFO L226 Difference]: Without dead ends: 103 [2021-05-06 06:24:03,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2120.0ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:24:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-06 06:24:03,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-06 06:24:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-06 06:24:03,888 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-06 06:24:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:03,888 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-06 06:24:03,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-06 06:24:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 06:24:03,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:03,889 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:04,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 06:24:04,090 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-06 06:24:04,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:04,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372965565] [2021-05-06 06:24:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:24:04,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:04,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372965565] [2021-05-06 06:24:04,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372965565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:04,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803433114] [2021-05-06 06:24:04,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:04,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:24:04,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:04,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:24:04,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803433114] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:04,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:04,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-06 06:24:04,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692694050] [2021-05-06 06:24:04,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:24:04,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:04,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:24:04,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:24:04,768 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:05,872 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-06 06:24:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 06:24:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-06 06:24:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:05,872 INFO L225 Difference]: With dead ends: 104 [2021-05-06 06:24:05,872 INFO L226 Difference]: Without dead ends: 104 [2021-05-06 06:24:05,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1448.1ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 06:24:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-06 06:24:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-06 06:24:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-06 06:24:05,875 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-06 06:24:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:05,875 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-06 06:24:05,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-06 06:24:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-06 06:24:05,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:05,875 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:06,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-06 06:24:06,079 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-06 06:24:06,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:06,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887628020] [2021-05-06 06:24:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:24:06,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:06,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887628020] [2021-05-06 06:24:06,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887628020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:06,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841376859] [2021-05-06 06:24:06,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:06,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:24:06,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:06,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:24:06,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:06,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:24:06,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841376859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:06,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:06,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-06 06:24:06,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138343688] [2021-05-06 06:24:06,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 06:24:06,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:06,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 06:24:06,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:24:06,777 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:07,992 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-06 06:24:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:24:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-06 06:24:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:07,993 INFO L225 Difference]: With dead ends: 106 [2021-05-06 06:24:07,993 INFO L226 Difference]: Without dead ends: 106 [2021-05-06 06:24:07,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1502.2ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:24:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-06 06:24:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-06 06:24:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.118811881188119) internal successors, (113), 101 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-06 06:24:07,995 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-06 06:24:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:07,995 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-06 06:24:07,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-06 06:24:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 06:24:07,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:07,996 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:08,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 06:24:08,205 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-06 06:24:08,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:08,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527692041] [2021-05-06 06:24:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:24:08,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:08,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527692041] [2021-05-06 06:24:08,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527692041] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:08,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211365356] [2021-05-06 06:24:08,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:08,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 06:24:08,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:08,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:24:08,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:08,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2021-05-06 06:24:09,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211365356] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:09,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:09,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-06 06:24:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233393538] [2021-05-06 06:24:09,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:24:09,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:09,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:24:09,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:24:09,222 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:11,079 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-06 06:24:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:24:11,079 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-06 06:24:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:11,080 INFO L225 Difference]: With dead ends: 111 [2021-05-06 06:24:11,080 INFO L226 Difference]: Without dead ends: 111 [2021-05-06 06:24:11,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2472.9ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:24:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-06 06:24:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-06 06:24:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 105 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-06 06:24:11,082 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-06 06:24:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:11,082 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-06 06:24:11,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-06 06:24:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 06:24:11,083 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:11,083 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:11,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 06:24:11,299 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-06 06:24:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:11,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835105339] [2021-05-06 06:24:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:24:11,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:11,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835105339] [2021-05-06 06:24:11,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835105339] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:11,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473036367] [2021-05-06 06:24:11,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:11,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:24:11,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:24:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:11,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:24:12,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473036367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:12,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:12,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-06 06:24:12,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471628075] [2021-05-06 06:24:12,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 06:24:12,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:12,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 06:24:12,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 06:24:12,037 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:13,334 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-06 06:24:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 06:24:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-06 06:24:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:13,335 INFO L225 Difference]: With dead ends: 112 [2021-05-06 06:24:13,335 INFO L226 Difference]: Without dead ends: 112 [2021-05-06 06:24:13,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1623.9ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 06:24:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-06 06:24:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-06 06:24:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 107 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-06 06:24:13,337 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-06 06:24:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:13,337 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-06 06:24:13,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-06 06:24:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 06:24:13,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:13,338 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:13,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 06:24:13,554 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-06 06:24:13,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:13,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582036698] [2021-05-06 06:24:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:24:14,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:14,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582036698] [2021-05-06 06:24:14,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582036698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:14,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947148749] [2021-05-06 06:24:14,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:14,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-06 06:24:14,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:14,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:24:14,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:24:14,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947148749] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:14,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:14,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-06 06:24:14,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947455673] [2021-05-06 06:24:14,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:24:14,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:24:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:24:14,344 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:15,626 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-06 06:24:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 06:24:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-06 06:24:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:15,627 INFO L225 Difference]: With dead ends: 114 [2021-05-06 06:24:15,627 INFO L226 Difference]: Without dead ends: 114 [2021-05-06 06:24:15,628 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1709.5ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:24:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-06 06:24:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-06 06:24:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-06 06:24:15,629 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-06 06:24:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:15,630 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-06 06:24:15,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-06 06:24:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 06:24:15,630 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:15,630 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:15,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 06:24:15,845 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-06 06:24:15,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:15,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287091582] [2021-05-06 06:24:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:24:16,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:16,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287091582] [2021-05-06 06:24:16,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287091582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:16,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395974595] [2021-05-06 06:24:16,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:16,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-06 06:24:16,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:16,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 06:24:16,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:16,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:16,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2021-05-06 06:24:17,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395974595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:17,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:17,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-06 06:24:17,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921365860] [2021-05-06 06:24:17,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:24:17,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:17,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:24:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:24:17,018 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:19,098 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-06 06:24:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 06:24:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-06 06:24:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:19,099 INFO L225 Difference]: With dead ends: 119 [2021-05-06 06:24:19,099 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 06:24:19,099 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2781.4ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:24:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 06:24:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-06 06:24:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 113 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-06 06:24:19,101 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-06 06:24:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:19,101 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-06 06:24:19,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-06 06:24:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 06:24:19,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:19,102 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:19,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-06 06:24:19,313 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-06 06:24:19,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:19,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522488092] [2021-05-06 06:24:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:24:19,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:19,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522488092] [2021-05-06 06:24:19,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522488092] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:19,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137345524] [2021-05-06 06:24:19,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:19,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-06 06:24:19,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:24:20,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137345524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:20,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:20,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-06 06:24:20,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633567356] [2021-05-06 06:24:20,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 06:24:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:20,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 06:24:20,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 06:24:20,158 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:21,572 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-06 06:24:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 06:24:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-06 06:24:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:21,576 INFO L225 Difference]: With dead ends: 120 [2021-05-06 06:24:21,576 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 06:24:21,576 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1845.1ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 06:24:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 06:24:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-06 06:24:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-06 06:24:21,578 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-06 06:24:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:21,578 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-06 06:24:21,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-06 06:24:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-06 06:24:21,579 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:21,579 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:21,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:21,793 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-06 06:24:21,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:21,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659119197] [2021-05-06 06:24:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:24:22,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:22,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659119197] [2021-05-06 06:24:22,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659119197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:22,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483983150] [2021-05-06 06:24:22,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:22,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:24:22,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:22,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 06:24:22,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:24:22,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483983150] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:22,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:22,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-06 06:24:22,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365796389] [2021-05-06 06:24:22,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 06:24:22,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 06:24:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:24:22,682 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:24,200 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-06 06:24:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 06:24:24,200 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-06 06:24:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:24,201 INFO L225 Difference]: With dead ends: 122 [2021-05-06 06:24:24,201 INFO L226 Difference]: Without dead ends: 122 [2021-05-06 06:24:24,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1926.3ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:24:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-06 06:24:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-06 06:24:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 117 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-06 06:24:24,204 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-06 06:24:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:24,204 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-06 06:24:24,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-06 06:24:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-06 06:24:24,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:24,205 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:24,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:24,421 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-06 06:24:24,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:24,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200199365] [2021-05-06 06:24:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:24:25,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:25,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200199365] [2021-05-06 06:24:25,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200199365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:25,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014651317] [2021-05-06 06:24:25,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:25,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-06 06:24:25,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:25,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:24:25,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:25,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2021-05-06 06:24:25,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014651317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:25,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:25,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-06 06:24:25,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547053892] [2021-05-06 06:24:25,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 06:24:25,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 06:24:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:24:25,793 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:28,122 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-06 06:24:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:24:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-06 06:24:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:28,123 INFO L225 Difference]: With dead ends: 127 [2021-05-06 06:24:28,123 INFO L226 Difference]: Without dead ends: 127 [2021-05-06 06:24:28,123 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3211.8ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:24:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-06 06:24:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-06 06:24:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-06 06:24:28,125 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-06 06:24:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:28,125 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-06 06:24:28,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-06 06:24:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 06:24:28,126 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:28,126 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:28,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:28,343 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-06 06:24:28,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:28,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410140909] [2021-05-06 06:24:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:24:29,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:29,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410140909] [2021-05-06 06:24:29,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410140909] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:29,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133671990] [2021-05-06 06:24:29,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:29,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:24:29,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:29,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 06:24:29,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:29,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:24:29,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133671990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:29,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:29,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-06 06:24:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214129918] [2021-05-06 06:24:29,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 06:24:29,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 06:24:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 06:24:29,285 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:30,882 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-06 06:24:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:24:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-06 06:24:30,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:30,883 INFO L225 Difference]: With dead ends: 128 [2021-05-06 06:24:30,883 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 06:24:30,884 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2088.2ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 06:24:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 06:24:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 06:24:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 123 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-06 06:24:30,885 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-06 06:24:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:30,885 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-06 06:24:30,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-06 06:24:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-06 06:24:30,886 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:30,886 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:31,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-06 06:24:31,102 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:31,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:31,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-06 06:24:31,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:31,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599857800] [2021-05-06 06:24:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:24:31,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:31,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599857800] [2021-05-06 06:24:31,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599857800] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:31,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251546154] [2021-05-06 06:24:31,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:31,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-06 06:24:31,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:31,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-06 06:24:31,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:24:32,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251546154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:32,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:32,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-06 06:24:32,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177395811] [2021-05-06 06:24:32,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 06:24:32,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 06:24:32,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 06:24:32,124 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:33,797 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-06 06:24:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 06:24:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-06 06:24:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:33,798 INFO L225 Difference]: With dead ends: 130 [2021-05-06 06:24:33,798 INFO L226 Difference]: Without dead ends: 130 [2021-05-06 06:24:33,799 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2179.0ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:24:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-06 06:24:33,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-06 06:24:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.12) internal successors, (140), 125 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-06 06:24:33,800 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-06 06:24:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:33,801 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-06 06:24:33,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-06 06:24:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-06 06:24:33,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:33,801 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:34,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:34,017 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-06 06:24:34,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:34,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127258449] [2021-05-06 06:24:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:24:34,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:34,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127258449] [2021-05-06 06:24:34,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127258449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:34,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211526482] [2021-05-06 06:24:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:34,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-06 06:24:34,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:24:34,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:34,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2021-05-06 06:24:35,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211526482] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:35,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:35,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-06 06:24:35,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831891226] [2021-05-06 06:24:35,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:24:35,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:24:35,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:24:35,520 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:38,101 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-06 06:24:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:24:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-06 06:24:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:38,102 INFO L225 Difference]: With dead ends: 135 [2021-05-06 06:24:38,102 INFO L226 Difference]: Without dead ends: 135 [2021-05-06 06:24:38,103 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3555.9ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:24:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-06 06:24:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-06 06:24:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-06 06:24:38,105 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-06 06:24:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:38,105 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-06 06:24:38,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-06 06:24:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 06:24:38,105 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:38,105 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:38,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:38,321 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-06 06:24:38,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:38,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015831518] [2021-05-06 06:24:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:24:39,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:39,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015831518] [2021-05-06 06:24:39,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015831518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:39,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094841151] [2021-05-06 06:24:39,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:39,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-06 06:24:39,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:24:39,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094841151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:39,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:39,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-06 06:24:39,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721828187] [2021-05-06 06:24:39,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:24:39,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:39,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:24:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:24:39,386 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:41,083 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-06 06:24:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 06:24:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-06 06:24:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:41,084 INFO L225 Difference]: With dead ends: 136 [2021-05-06 06:24:41,085 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 06:24:41,085 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2328.9ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 06:24:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 06:24:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-06 06:24:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 131 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-06 06:24:41,087 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-06 06:24:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:41,087 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-06 06:24:41,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:41,087 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-06 06:24:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-06 06:24:41,087 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:41,087 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:41,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-06 06:24:41,305 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-06 06:24:41,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:41,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477602019] [2021-05-06 06:24:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:24:42,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:42,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477602019] [2021-05-06 06:24:42,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477602019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:42,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695913614] [2021-05-06 06:24:42,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:42,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:24:42,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:42,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 06:24:42,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:42,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:24:42,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695913614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:42,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:42,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-06 06:24:42,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923700641] [2021-05-06 06:24:42,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 06:24:42,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:42,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 06:24:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:24:42,364 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:44,233 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-06 06:24:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:24:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-06 06:24:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:44,234 INFO L225 Difference]: With dead ends: 138 [2021-05-06 06:24:44,234 INFO L226 Difference]: Without dead ends: 138 [2021-05-06 06:24:44,235 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2423.1ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:24:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-06 06:24:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-06 06:24:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 133 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-06 06:24:44,236 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-06 06:24:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:44,237 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-06 06:24:44,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-06 06:24:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-06 06:24:44,237 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:44,237 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:44,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 06:24:44,454 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-06 06:24:44,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:44,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250583434] [2021-05-06 06:24:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:24:45,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:45,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250583434] [2021-05-06 06:24:45,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250583434] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:45,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465527774] [2021-05-06 06:24:45,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-06 06:24:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 06:24:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:46,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:46,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2021-05-06 06:24:46,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465527774] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:46,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:46,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-06 06:24:46,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393088025] [2021-05-06 06:24:46,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:24:46,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:46,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:24:46,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:24:46,113 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:48,977 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-06 06:24:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 06:24:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-06 06:24:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:48,978 INFO L225 Difference]: With dead ends: 143 [2021-05-06 06:24:48,978 INFO L226 Difference]: Without dead ends: 143 [2021-05-06 06:24:48,979 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4015.2ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:24:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-06 06:24:48,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-06 06:24:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-06 06:24:48,981 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-06 06:24:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:48,981 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-06 06:24:48,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-06 06:24:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 06:24:48,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:48,982 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:49,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 06:24:49,198 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-06 06:24:49,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:49,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792351304] [2021-05-06 06:24:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:24:50,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:50,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792351304] [2021-05-06 06:24:50,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792351304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:50,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441876486] [2021-05-06 06:24:50,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:50,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:24:50,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:50,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 06:24:50,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:24:50,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441876486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:50,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:50,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-06 06:24:50,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279349795] [2021-05-06 06:24:50,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 06:24:50,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 06:24:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 06:24:50,367 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:52,372 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-06 06:24:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 06:24:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-06 06:24:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:52,374 INFO L225 Difference]: With dead ends: 144 [2021-05-06 06:24:52,374 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 06:24:52,374 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2590.7ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 06:24:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 06:24:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-06 06:24:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 139 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-06 06:24:52,376 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-06 06:24:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:52,376 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-06 06:24:52,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-06 06:24:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 06:24:52,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:52,377 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:52,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:52,593 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:52,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-06 06:24:52,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:52,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944437981] [2021-05-06 06:24:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:24:53,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:53,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944437981] [2021-05-06 06:24:53,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944437981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:53,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265066700] [2021-05-06 06:24:53,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:53,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-06 06:24:53,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-06 06:24:53,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:53,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:24:53,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265066700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:53,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:53,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-06 06:24:53,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490473699] [2021-05-06 06:24:53,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:24:53,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:53,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:24:53,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:24:53,801 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:24:55,865 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-06 06:24:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 06:24:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-06 06:24:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:24:55,866 INFO L225 Difference]: With dead ends: 146 [2021-05-06 06:24:55,866 INFO L226 Difference]: Without dead ends: 146 [2021-05-06 06:24:55,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2695.1ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:24:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-06 06:24:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-06 06:24:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 141 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-06 06:24:55,868 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-06 06:24:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:24:55,868 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-06 06:24:55,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:24:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-06 06:24:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-06 06:24:55,869 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:24:55,869 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:24:56,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:56,070 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:24:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:24:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-06 06:24:56,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:24:56,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274235349] [2021-05-06 06:24:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:24:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:24:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:24:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:24:57,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:24:57,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274235349] [2021-05-06 06:24:57,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274235349] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:57,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360956632] [2021-05-06 06:24:57,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:24:57,138 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-06 06:24:57,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:24:57,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:24:57,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:24:57,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:57,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:24:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2021-05-06 06:24:58,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360956632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:24:58,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:24:58,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-06 06:24:58,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252474809] [2021-05-06 06:24:58,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 06:24:58,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:24:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 06:24:58,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 06:24:58,003 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:01,316 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-06 06:25:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:25:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-06 06:25:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:01,317 INFO L225 Difference]: With dead ends: 151 [2021-05-06 06:25:01,317 INFO L226 Difference]: Without dead ends: 151 [2021-05-06 06:25:01,318 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4593.4ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:25:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-06 06:25:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-06 06:25:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 145 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-06 06:25:01,319 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-06 06:25:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:01,320 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-06 06:25:01,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-06 06:25:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 06:25:01,320 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:01,320 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:01,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-06 06:25:01,537 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:01,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-06 06:25:01,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:01,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162504700] [2021-05-06 06:25:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:25:02,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:02,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162504700] [2021-05-06 06:25:02,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162504700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:02,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835664591] [2021-05-06 06:25:02,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:02,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-06 06:25:02,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:02,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:25:02,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835664591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:02,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:02,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-06 06:25:02,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288930210] [2021-05-06 06:25:02,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 06:25:02,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:02,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 06:25:02,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 06:25:02,871 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:04,964 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-06 06:25:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 06:25:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-06 06:25:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:04,965 INFO L225 Difference]: With dead ends: 152 [2021-05-06 06:25:04,965 INFO L226 Difference]: Without dead ends: 152 [2021-05-06 06:25:04,966 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 2951.8ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 06:25:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-06 06:25:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-06 06:25:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1224489795918366) internal successors, (165), 147 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-06 06:25:04,967 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-06 06:25:04,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:04,968 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-06 06:25:04,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-06 06:25:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-06 06:25:04,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:04,968 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:05,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:05,185 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-06 06:25:05,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:05,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506252802] [2021-05-06 06:25:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:06,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:25:06,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:06,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506252802] [2021-05-06 06:25:06,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506252802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:06,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702493629] [2021-05-06 06:25:06,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:06,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:25:06,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 06:25:06,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:06,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:25:06,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702493629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:06,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:06,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-06 06:25:06,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169571117] [2021-05-06 06:25:06,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 06:25:06,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:06,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 06:25:06,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:25:06,511 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:08,715 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-06 06:25:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 06:25:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-06 06:25:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:08,716 INFO L225 Difference]: With dead ends: 154 [2021-05-06 06:25:08,716 INFO L226 Difference]: Without dead ends: 154 [2021-05-06 06:25:08,717 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2985.1ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:25:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-06 06:25:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-06 06:25:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-06 06:25:08,718 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-06 06:25:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:08,718 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-06 06:25:08,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-06 06:25:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-06 06:25:08,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:08,719 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:08,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-06 06:25:08,933 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-06 06:25:08,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:08,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009315117] [2021-05-06 06:25:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:25:10,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:10,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009315117] [2021-05-06 06:25:10,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009315117] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:10,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668481654] [2021-05-06 06:25:10,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:10,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 06:25:10,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:10,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:25:10,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2863 trivial. 0 not checked. [2021-05-06 06:25:10,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668481654] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:10,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:10,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-06 06:25:10,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602135655] [2021-05-06 06:25:10,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:25:10,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:10,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:25:10,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:25:10,985 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:14,469 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-06 06:25:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:25:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-06 06:25:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:14,470 INFO L225 Difference]: With dead ends: 159 [2021-05-06 06:25:14,470 INFO L226 Difference]: Without dead ends: 159 [2021-05-06 06:25:14,471 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 4963.4ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:25:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-06 06:25:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-06 06:25:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1241830065359477) internal successors, (172), 153 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-06 06:25:14,473 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-06 06:25:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:14,473 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-06 06:25:14,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-06 06:25:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 06:25:14,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:14,474 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:14,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-06 06:25:14,689 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:14,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:14,689 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-06 06:25:14,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:14,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063312124] [2021-05-06 06:25:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:25:15,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:15,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063312124] [2021-05-06 06:25:15,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063312124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:15,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703985316] [2021-05-06 06:25:15,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:15,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:25:15,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:15,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 06:25:15,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:15,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:25:16,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703985316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:16,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:16,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-06 06:25:16,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439957585] [2021-05-06 06:25:16,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 06:25:16,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:16,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 06:25:16,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 06:25:16,092 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:18,454 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-06 06:25:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:25:18,455 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-06 06:25:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:18,455 INFO L225 Difference]: With dead ends: 160 [2021-05-06 06:25:18,455 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 06:25:18,456 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3180.7ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 06:25:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 06:25:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-06 06:25:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1225806451612903) internal successors, (174), 155 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-06 06:25:18,458 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-06 06:25:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:18,458 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-06 06:25:18,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-06 06:25:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-06 06:25:18,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:18,458 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:18,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-06 06:25:18,659 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-06 06:25:18,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:18,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477889966] [2021-05-06 06:25:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:25:19,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:19,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477889966] [2021-05-06 06:25:19,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477889966] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:19,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575488129] [2021-05-06 06:25:19,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:19,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-06 06:25:19,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:19,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-06 06:25:19,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:19,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:25:20,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575488129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:20,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:20,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-06 06:25:20,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585510753] [2021-05-06 06:25:20,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 06:25:20,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:20,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 06:25:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 06:25:20,110 INFO L87 Difference]: Start difference. First operand 160 states and 178 transitions. Second operand has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:22,527 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-06 06:25:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 06:25:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-06 06:25:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:22,531 INFO L225 Difference]: With dead ends: 162 [2021-05-06 06:25:22,531 INFO L226 Difference]: Without dead ends: 162 [2021-05-06 06:25:22,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3249.3ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:25:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-06 06:25:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-06 06:25:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.1210191082802548) internal successors, (176), 157 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-06 06:25:22,533 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-06 06:25:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:22,533 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-06 06:25:22,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-06 06:25:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-06 06:25:22,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:22,534 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:22,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-06 06:25:22,745 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:22,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-06 06:25:22,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:22,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133165088] [2021-05-06 06:25:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:25:23,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:23,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133165088] [2021-05-06 06:25:23,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133165088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:23,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34140616] [2021-05-06 06:25:23,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:24,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-06 06:25:24,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:24,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 06:25:24,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:24,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2021-05-06 06:25:25,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34140616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:25,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:25,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-06 06:25:25,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948229138] [2021-05-06 06:25:25,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:25:25,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:25:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:25:25,038 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:28,863 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-06 06:25:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 06:25:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-06 06:25:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:28,864 INFO L225 Difference]: With dead ends: 167 [2021-05-06 06:25:28,864 INFO L226 Difference]: Without dead ends: 167 [2021-05-06 06:25:28,865 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5446.8ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:25:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-06 06:25:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-06 06:25:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.124223602484472) internal successors, (181), 161 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-06 06:25:28,866 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-06 06:25:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:28,867 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-06 06:25:28,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-06 06:25:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 06:25:28,867 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:28,867 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:29,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:29,068 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:29,068 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-06 06:25:29,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:29,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261328613] [2021-05-06 06:25:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:25:30,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:30,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261328613] [2021-05-06 06:25:30,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261328613] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:30,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489930208] [2021-05-06 06:25:30,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:30,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-06 06:25:30,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:30,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:25:30,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489930208] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:30,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:30,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-06 06:25:30,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452861254] [2021-05-06 06:25:30,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:25:30,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:25:30,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:25:30,602 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:33,155 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-06 06:25:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 06:25:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-06 06:25:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:33,156 INFO L225 Difference]: With dead ends: 168 [2021-05-06 06:25:33,156 INFO L226 Difference]: Without dead ends: 168 [2021-05-06 06:25:33,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3447.5ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 06:25:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-06 06:25:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-06 06:25:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1226993865030674) internal successors, (183), 163 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-06 06:25:33,159 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-06 06:25:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:33,159 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-06 06:25:33,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-06 06:25:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 06:25:33,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:33,160 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:33,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-06 06:25:33,376 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-06 06:25:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:33,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385551633] [2021-05-06 06:25:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:25:34,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:34,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385551633] [2021-05-06 06:25:34,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385551633] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:34,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203081868] [2021-05-06 06:25:34,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:34,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:25:34,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:34,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 06:25:34,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:25:34,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203081868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:34,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:34,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-06 06:25:34,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597546835] [2021-05-06 06:25:34,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 06:25:34,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 06:25:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:25:34,947 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:37,589 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-06 06:25:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:25:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-06 06:25:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:37,589 INFO L225 Difference]: With dead ends: 170 [2021-05-06 06:25:37,590 INFO L226 Difference]: Without dead ends: 170 [2021-05-06 06:25:37,590 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3572.7ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 06:25:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-06 06:25:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-06 06:25:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.121212121212121) internal successors, (185), 165 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-06 06:25:37,592 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-06 06:25:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:37,592 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-06 06:25:37,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-06 06:25:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-06 06:25:37,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:37,593 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:37,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:37,809 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-06 06:25:37,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:37,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823555272] [2021-05-06 06:25:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:25:39,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:39,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823555272] [2021-05-06 06:25:39,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823555272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:39,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926681536] [2021-05-06 06:25:39,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:39,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-06 06:25:39,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:39,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:25:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2021-05-06 06:25:40,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926681536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:40,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:40,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-06 06:25:40,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833624868] [2021-05-06 06:25:40,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 06:25:40,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 06:25:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:25:40,271 INFO L87 Difference]: Start difference. First operand 170 states and 189 transitions. Second operand has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:44,462 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-06 06:25:44,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:25:44,463 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-06 06:25:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:44,463 INFO L225 Difference]: With dead ends: 175 [2021-05-06 06:25:44,463 INFO L226 Difference]: Without dead ends: 175 [2021-05-06 06:25:44,464 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 5989.9ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-06 06:25:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-06 06:25:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-06 06:25:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1242603550295858) internal successors, (190), 169 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-06 06:25:44,466 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-06 06:25:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:44,466 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-06 06:25:44,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-06 06:25:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 06:25:44,467 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:44,467 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:44,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-06 06:25:44,683 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-06 06:25:44,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:44,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003814101] [2021-05-06 06:25:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:25:46,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:46,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003814101] [2021-05-06 06:25:46,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003814101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:46,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049880560] [2021-05-06 06:25:46,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:46,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:25:46,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:46,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 06:25:46,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:46,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:25:46,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049880560] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:46,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:46,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-06 06:25:46,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033238583] [2021-05-06 06:25:46,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 06:25:46,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 06:25:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 06:25:46,305 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:49,067 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-06 06:25:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 06:25:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-06 06:25:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:49,068 INFO L225 Difference]: With dead ends: 176 [2021-05-06 06:25:49,068 INFO L226 Difference]: Without dead ends: 176 [2021-05-06 06:25:49,069 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 3761.4ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 06:25:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-06 06:25:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-06 06:25:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1228070175438596) internal successors, (192), 171 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-06 06:25:49,073 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-06 06:25:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:49,074 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-06 06:25:49,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-06 06:25:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-06 06:25:49,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:49,074 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:49,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:49,277 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-06 06:25:49,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:49,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640487784] [2021-05-06 06:25:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:25:50,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:50,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640487784] [2021-05-06 06:25:50,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640487784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:50,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391643937] [2021-05-06 06:25:50,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:50,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-06 06:25:50,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:50,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-06 06:25:50,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:25:51,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391643937] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:51,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:51,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-06 06:25:51,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998430256] [2021-05-06 06:25:51,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:25:51,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:51,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:25:51,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:25:51,006 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:25:53,856 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-06 06:25:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 06:25:53,856 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-06 06:25:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:25:53,857 INFO L225 Difference]: With dead ends: 178 [2021-05-06 06:25:53,857 INFO L226 Difference]: Without dead ends: 178 [2021-05-06 06:25:53,858 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 3865.2ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-06 06:25:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-06 06:25:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-06 06:25:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1213872832369942) internal successors, (194), 173 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-06 06:25:53,859 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-06 06:25:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:25:53,860 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-06 06:25:53,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:25:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-06 06:25:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-06 06:25:53,860 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:25:53,860 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:25:54,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-06 06:25:54,077 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:25:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:25:54,078 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-06 06:25:54,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:25:54,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203513680] [2021-05-06 06:25:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:25:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:25:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:25:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:25:55,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:25:55,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203513680] [2021-05-06 06:25:55,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203513680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:55,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952188010] [2021-05-06 06:25:55,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:25:55,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-06 06:25:55,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:25:55,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:25:55,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:25:55,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:25:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3907 trivial. 0 not checked. [2021-05-06 06:25:56,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952188010] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:25:56,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:25:56,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-06 06:25:56,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135865412] [2021-05-06 06:25:56,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:25:56,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:25:56,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:25:56,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:25:56,795 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:01,304 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-06 06:26:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:26:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-06 06:26:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:01,305 INFO L225 Difference]: With dead ends: 183 [2021-05-06 06:26:01,305 INFO L226 Difference]: Without dead ends: 183 [2021-05-06 06:26:01,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 6508.4ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-06 06:26:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-06 06:26:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-06 06:26:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 177 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-06 06:26:01,308 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-06 06:26:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:01,308 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-06 06:26:01,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-06 06:26:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 06:26:01,309 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:01,309 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:01,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:01,518 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-06 06:26:01,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:01,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943885939] [2021-05-06 06:26:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:02,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:26:02,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:02,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943885939] [2021-05-06 06:26:02,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943885939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:02,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400933238] [2021-05-06 06:26:02,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:03,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-06 06:26:03,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:03,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:26:03,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400933238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:03,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:03,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-06 06:26:03,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691695255] [2021-05-06 06:26:03,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 06:26:03,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:03,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 06:26:03,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 06:26:03,299 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:06,245 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-06 06:26:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 06:26:06,245 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-06 06:26:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:06,246 INFO L225 Difference]: With dead ends: 184 [2021-05-06 06:26:06,246 INFO L226 Difference]: Without dead ends: 184 [2021-05-06 06:26:06,247 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4077.0ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 06:26:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-06 06:26:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-06 06:26:06,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 179 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-06 06:26:06,248 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-06 06:26:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:06,249 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-06 06:26:06,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-06 06:26:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-06 06:26:06,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:06,249 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:06,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-06 06:26:06,467 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:06,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-06 06:26:06,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:06,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550995724] [2021-05-06 06:26:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:26:07,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:07,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550995724] [2021-05-06 06:26:07,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550995724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:07,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407873539] [2021-05-06 06:26:07,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:08,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:26:08,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:08,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 06:26:08,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:08,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:26:08,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407873539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:08,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:08,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-06 06:26:08,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605991382] [2021-05-06 06:26:08,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 06:26:08,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:08,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 06:26:08,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:26:08,296 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:11,217 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-06 06:26:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 06:26:11,217 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-06 06:26:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:11,218 INFO L225 Difference]: With dead ends: 186 [2021-05-06 06:26:11,218 INFO L226 Difference]: Without dead ends: 186 [2021-05-06 06:26:11,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4194.2ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-06 06:26:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-06 06:26:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-06 06:26:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.1215469613259668) internal successors, (203), 181 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-06 06:26:11,221 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-06 06:26:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:11,221 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-06 06:26:11,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-06 06:26:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 06:26:11,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:11,222 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:11,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:11,434 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-06 06:26:11,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:11,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498123216] [2021-05-06 06:26:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:26:12,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:12,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498123216] [2021-05-06 06:26:12,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498123216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:12,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394907263] [2021-05-06 06:26:12,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:13,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-06 06:26:13,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:13,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 06:26:13,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2021-05-06 06:26:14,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394907263] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:14,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:14,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-06 06:26:14,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451820471] [2021-05-06 06:26:14,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:26:14,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:14,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:26:14,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:26:14,329 INFO L87 Difference]: Start difference. First operand 186 states and 207 transitions. Second operand has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:19,192 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-06 06:26:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 06:26:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-06 06:26:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:19,193 INFO L225 Difference]: With dead ends: 191 [2021-05-06 06:26:19,193 INFO L226 Difference]: Without dead ends: 191 [2021-05-06 06:26:19,194 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7066.8ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 06:26:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-06 06:26:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-06 06:26:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-06 06:26:19,196 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-06 06:26:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:19,196 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-06 06:26:19,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-06 06:26:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 06:26:19,197 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:19,197 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:19,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-06 06:26:19,409 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:19,409 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-06 06:26:19,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:19,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825668797] [2021-05-06 06:26:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:26:21,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:21,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825668797] [2021-05-06 06:26:21,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825668797] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:21,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076955516] [2021-05-06 06:26:21,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:21,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:26:21,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:21,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 06:26:21,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:21,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:26:21,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076955516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:21,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:21,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-06 06:26:21,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376678749] [2021-05-06 06:26:21,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 06:26:21,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 06:26:21,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 06:26:21,352 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:24,535 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-06 06:26:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:26:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-06 06:26:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:24,536 INFO L225 Difference]: With dead ends: 192 [2021-05-06 06:26:24,536 INFO L226 Difference]: Without dead ends: 192 [2021-05-06 06:26:24,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4430.1ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 06:26:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-06 06:26:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-06 06:26:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 187 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-06 06:26:24,538 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-06 06:26:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:24,539 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-06 06:26:24,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-06 06:26:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-06 06:26:24,539 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:24,539 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:24,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-06 06:26:24,740 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-06 06:26:24,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:24,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940091838] [2021-05-06 06:26:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:26:26,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:26,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940091838] [2021-05-06 06:26:26,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940091838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:26,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904997223] [2021-05-06 06:26:26,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:26,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-06 06:26:26,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:26,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-06 06:26:26,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:26,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:26:26,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904997223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:26,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:26,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-06 06:26:26,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206950181] [2021-05-06 06:26:26,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 06:26:26,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:26,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 06:26:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 06:26:26,729 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:30,000 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-06 06:26:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 06:26:30,000 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-06 06:26:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:30,001 INFO L225 Difference]: With dead ends: 194 [2021-05-06 06:26:30,001 INFO L226 Difference]: Without dead ends: 194 [2021-05-06 06:26:30,002 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 4517.2ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-06 06:26:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-06 06:26:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-06 06:26:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.1216931216931216) internal successors, (212), 189 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-06 06:26:30,003 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-06 06:26:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:30,004 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-06 06:26:30,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-06 06:26:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-06 06:26:30,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:30,004 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:30,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-06 06:26:30,205 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-06 06:26:30,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:30,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968136324] [2021-05-06 06:26:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:26:31,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:31,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968136324] [2021-05-06 06:26:31,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968136324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:31,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283676198] [2021-05-06 06:26:31,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:31,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-06 06:26:31,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:32,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:26:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:32,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2021-05-06 06:26:33,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283676198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:33,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:33,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-06 06:26:33,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311236780] [2021-05-06 06:26:33,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-06 06:26:33,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-06 06:26:33,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 06:26:33,381 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:38,626 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-06 06:26:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:26:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-06 06:26:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:38,627 INFO L225 Difference]: With dead ends: 199 [2021-05-06 06:26:38,627 INFO L226 Difference]: Without dead ends: 199 [2021-05-06 06:26:38,628 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 7648.9ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-06 06:26:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-06 06:26:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-06 06:26:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-06 06:26:38,630 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-06 06:26:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:38,630 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-06 06:26:38,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-06 06:26:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 06:26:38,630 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:38,631 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:38,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:38,845 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-06 06:26:38,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:38,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448732261] [2021-05-06 06:26:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:26:40,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:40,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448732261] [2021-05-06 06:26:40,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448732261] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:40,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848191350] [2021-05-06 06:26:40,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:40,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-06 06:26:40,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:26:40,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848191350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:40,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:40,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-06 06:26:40,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546310418] [2021-05-06 06:26:40,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:26:40,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:40,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:26:40,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:26:40,911 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:44,362 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-06 06:26:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 06:26:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-06 06:26:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:44,363 INFO L225 Difference]: With dead ends: 200 [2021-05-06 06:26:44,364 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 06:26:44,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4776.7ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 06:26:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 06:26:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 06:26:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.123076923076923) internal successors, (219), 195 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-06 06:26:44,366 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-06 06:26:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:44,366 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-06 06:26:44,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-06 06:26:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-06 06:26:44,367 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:44,367 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:44,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:44,584 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:44,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-06 06:26:44,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:44,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346905001] [2021-05-06 06:26:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:46,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:26:46,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:46,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346905001] [2021-05-06 06:26:46,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346905001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:46,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867179690] [2021-05-06 06:26:46,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:46,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:26:46,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:46,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 06:26:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:46,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:26:46,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867179690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:46,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:46,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-06 06:26:46,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620832708] [2021-05-06 06:26:46,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 06:26:46,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:46,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 06:26:46,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:26:46,739 INFO L87 Difference]: Start difference. First operand 200 states and 223 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:50,121 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-06 06:26:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:26:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-06 06:26:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:50,122 INFO L225 Difference]: With dead ends: 202 [2021-05-06 06:26:50,122 INFO L226 Difference]: Without dead ends: 202 [2021-05-06 06:26:50,123 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 4906.8ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-06 06:26:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-06 06:26:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-06 06:26:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.1218274111675126) internal successors, (221), 197 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-06 06:26:50,125 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-06 06:26:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:50,125 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-06 06:26:50,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-06 06:26:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-06 06:26:50,126 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:50,126 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:50,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:50,341 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-06 06:26:50,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:50,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706062489] [2021-05-06 06:26:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:26:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:26:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:26:52,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:26:52,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706062489] [2021-05-06 06:26:52,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706062489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:52,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639233217] [2021-05-06 06:26:52,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:26:52,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 06:26:52,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:26:52,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:26:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:26:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:26:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5113 trivial. 0 not checked. [2021-05-06 06:26:53,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639233217] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:26:53,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:26:53,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-06 06:26:53,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695210538] [2021-05-06 06:26:53,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:26:53,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:26:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:26:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:26:53,745 INFO L87 Difference]: Start difference. First operand 202 states and 225 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:26:59,453 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-06 06:26:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:26:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-06 06:26:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:26:59,454 INFO L225 Difference]: With dead ends: 207 [2021-05-06 06:26:59,454 INFO L226 Difference]: Without dead ends: 207 [2021-05-06 06:26:59,456 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 8287.6ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-06 06:26:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-06 06:26:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-06 06:26:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-06 06:26:59,457 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-06 06:26:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:26:59,457 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-06 06:26:59,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:26:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-06 06:26:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 06:26:59,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:26:59,458 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:26:59,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-06 06:26:59,675 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:26:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:26:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-06 06:26:59,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:26:59,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976477894] [2021-05-06 06:26:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:26:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:27:01,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:01,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976477894] [2021-05-06 06:27:01,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976477894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:01,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784649941] [2021-05-06 06:27:01,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:01,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:27:01,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:01,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 06:27:01,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:27:01,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784649941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:01,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:01,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-06 06:27:01,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143523659] [2021-05-06 06:27:01,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 06:27:01,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 06:27:01,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 06:27:01,937 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:05,457 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-06 06:27:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 06:27:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-06 06:27:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:05,458 INFO L225 Difference]: With dead ends: 208 [2021-05-06 06:27:05,458 INFO L226 Difference]: Without dead ends: 208 [2021-05-06 06:27:05,459 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5188.9ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 06:27:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-06 06:27:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-06 06:27:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.1231527093596059) internal successors, (228), 203 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-06 06:27:05,461 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-06 06:27:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:05,461 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-06 06:27:05,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-06 06:27:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-06 06:27:05,462 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:05,462 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:05,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:05,677 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:05,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-06 06:27:05,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:05,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613569488] [2021-05-06 06:27:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:27:07,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:07,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613569488] [2021-05-06 06:27:07,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613569488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:07,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479092058] [2021-05-06 06:27:07,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:07,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-06 06:27:07,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-06 06:27:07,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:27:08,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479092058] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:08,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:08,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-06 06:27:08,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857645690] [2021-05-06 06:27:08,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:27:08,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:08,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:27:08,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:27:08,009 INFO L87 Difference]: Start difference. First operand 208 states and 232 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:11,790 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-06 06:27:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 06:27:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-06 06:27:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:11,791 INFO L225 Difference]: With dead ends: 210 [2021-05-06 06:27:11,791 INFO L226 Difference]: Without dead ends: 210 [2021-05-06 06:27:11,792 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5290.2ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-06 06:27:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-06 06:27:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-06 06:27:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1219512195121952) internal successors, (230), 205 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-06 06:27:11,794 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-06 06:27:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:11,794 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-06 06:27:11,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-06 06:27:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-06 06:27:11,795 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:11,795 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:11,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:11,995 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-06 06:27:11,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:11,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539121750] [2021-05-06 06:27:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:27:13,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:13,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539121750] [2021-05-06 06:27:13,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539121750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:13,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197632135] [2021-05-06 06:27:13,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:14,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-06 06:27:14,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:14,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 06:27:14,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:14,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-05-06 06:27:15,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197632135] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:15,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:15,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-06 06:27:15,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23983650] [2021-05-06 06:27:15,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:27:15,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:15,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:27:15,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:27:15,737 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:21,918 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-06 06:27:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 06:27:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-06 06:27:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:21,919 INFO L225 Difference]: With dead ends: 215 [2021-05-06 06:27:21,919 INFO L226 Difference]: Without dead ends: 215 [2021-05-06 06:27:21,921 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 8945.8ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-06 06:27:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-06 06:27:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-06 06:27:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-06 06:27:21,923 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-06 06:27:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:21,923 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-06 06:27:21,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-06 06:27:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 06:27:21,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:21,924 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:22,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:22,138 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:22,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-06 06:27:22,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:22,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234746877] [2021-05-06 06:27:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:27:24,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:24,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234746877] [2021-05-06 06:27:24,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234746877] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:24,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661719341] [2021-05-06 06:27:24,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:24,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-06 06:27:24,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:27:24,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661719341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:24,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:24,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-06 06:27:24,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101888286] [2021-05-06 06:27:24,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 06:27:24,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:24,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 06:27:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 06:27:24,520 INFO L87 Difference]: Start difference. First operand 214 states and 239 transitions. Second operand has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:28,498 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-06 06:27:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 06:27:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-06 06:27:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:28,499 INFO L225 Difference]: With dead ends: 216 [2021-05-06 06:27:28,499 INFO L226 Difference]: Without dead ends: 216 [2021-05-06 06:27:28,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 5532.1ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 06:27:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-06 06:27:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-06 06:27:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1232227488151658) internal successors, (237), 211 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-06 06:27:28,502 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-06 06:27:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:28,502 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-06 06:27:28,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-06 06:27:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-06 06:27:28,503 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:28,503 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:28,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-06 06:27:28,719 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-06 06:27:28,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:28,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211719861] [2021-05-06 06:27:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:27:30,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:30,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211719861] [2021-05-06 06:27:30,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211719861] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:30,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49829548] [2021-05-06 06:27:30,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:30,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:27:30,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:30,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 06:27:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:30,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:30,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:27:31,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49829548] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:31,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:31,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-06 06:27:31,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295131456] [2021-05-06 06:27:31,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 06:27:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:31,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 06:27:31,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:27:31,169 INFO L87 Difference]: Start difference. First operand 216 states and 241 transitions. Second operand has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:35,179 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-06 06:27:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 06:27:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-06 06:27:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:35,180 INFO L225 Difference]: With dead ends: 218 [2021-05-06 06:27:35,180 INFO L226 Difference]: Without dead ends: 218 [2021-05-06 06:27:35,181 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 5648.0ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-06 06:27:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-06 06:27:35,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-06 06:27:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.1220657276995305) internal successors, (239), 213 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-06 06:27:35,183 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-06 06:27:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:35,183 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-06 06:27:35,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-06 06:27:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-06 06:27:35,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:35,184 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:35,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:35,384 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-06 06:27:35,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:35,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103319560] [2021-05-06 06:27:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:27:37,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:37,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103319560] [2021-05-06 06:27:37,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103319560] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:37,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683520132] [2021-05-06 06:27:37,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:37,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-06 06:27:37,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:37,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:27:37,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:37,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2021-05-06 06:27:39,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683520132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:39,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:39,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-06 06:27:39,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429729098] [2021-05-06 06:27:39,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-06 06:27:39,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-06 06:27:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:27:39,342 INFO L87 Difference]: Start difference. First operand 218 states and 243 transitions. Second operand has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:45,885 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-06 06:27:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:27:45,885 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-06 06:27:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:45,886 INFO L225 Difference]: With dead ends: 223 [2021-05-06 06:27:45,886 INFO L226 Difference]: Without dead ends: 223 [2021-05-06 06:27:45,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 9611.1ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-06 06:27:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-06 06:27:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-06 06:27:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1244239631336406) internal successors, (244), 217 states have internal predecessors, (244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-06 06:27:45,889 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-06 06:27:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:45,889 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-06 06:27:45,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-06 06:27:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 06:27:45,890 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:45,890 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:46,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-06 06:27:46,106 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-06 06:27:46,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:46,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055579197] [2021-05-06 06:27:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:48,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:27:48,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:48,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055579197] [2021-05-06 06:27:48,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055579197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:48,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988070127] [2021-05-06 06:27:48,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:48,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:27:48,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 06:27:48,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:27:48,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988070127] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:48,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:48,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-06 06:27:48,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863740117] [2021-05-06 06:27:48,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 06:27:48,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 06:27:48,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 06:27:48,713 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:52,817 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-06 06:27:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:27:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-06 06:27:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:52,818 INFO L225 Difference]: With dead ends: 224 [2021-05-06 06:27:52,818 INFO L226 Difference]: Without dead ends: 224 [2021-05-06 06:27:52,819 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 5985.9ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 06:27:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-06 06:27:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-06 06:27:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 219 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-06 06:27:52,821 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-06 06:27:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:52,821 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-06 06:27:52,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-06 06:27:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-06 06:27:52,821 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:52,822 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:27:53,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:53,022 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:27:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:27:53,022 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-06 06:27:53,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:27:53,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293754563] [2021-05-06 06:27:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:27:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:27:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:27:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:27:55,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:27:55,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293754563] [2021-05-06 06:27:55,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293754563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:55,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418232110] [2021-05-06 06:27:55,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:27:55,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-06 06:27:55,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:27:55,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-06 06:27:55,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:27:55,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:27:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:27:55,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418232110] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:27:55,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:27:55,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-06 06:27:55,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946990167] [2021-05-06 06:27:55,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 06:27:55,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:27:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 06:27:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 06:27:55,679 INFO L87 Difference]: Start difference. First operand 224 states and 250 transitions. Second operand has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:27:59,979 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-06 06:27:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 06:27:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-06 06:27:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:27:59,980 INFO L225 Difference]: With dead ends: 226 [2021-05-06 06:27:59,980 INFO L226 Difference]: Without dead ends: 226 [2021-05-06 06:27:59,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 6061.8ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-06 06:27:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-06 06:27:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-06 06:27:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.1221719457013575) internal successors, (248), 221 states have internal predecessors, (248), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-06 06:27:59,983 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-06 06:27:59,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:27:59,983 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-06 06:27:59,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:27:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-06 06:27:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-06 06:27:59,985 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:27:59,985 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:00,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:00,197 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-06 06:28:00,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:00,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355283125] [2021-05-06 06:28:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:28:02,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:02,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355283125] [2021-05-06 06:28:02,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355283125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:02,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803611801] [2021-05-06 06:28:02,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:02,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-06 06:28:02,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:28:02,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:03,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6481 trivial. 0 not checked. [2021-05-06 06:28:04,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803611801] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:04,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:04,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-06 06:28:04,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154677922] [2021-05-06 06:28:04,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:28:04,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:28:04,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:28:04,499 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:11,679 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-06 06:28:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:28:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-06 06:28:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:11,680 INFO L225 Difference]: With dead ends: 231 [2021-05-06 06:28:11,680 INFO L226 Difference]: Without dead ends: 231 [2021-05-06 06:28:11,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 10325.4ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-06 06:28:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-06 06:28:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-06 06:28:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1244444444444444) internal successors, (253), 225 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-06 06:28:11,698 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-06 06:28:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:11,698 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-06 06:28:11,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-06 06:28:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 06:28:11,699 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:11,699 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:11,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:11,913 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:11,913 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-06 06:28:11,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:11,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132727926] [2021-05-06 06:28:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:28:14,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:14,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132727926] [2021-05-06 06:28:14,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132727926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:14,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339555436] [2021-05-06 06:28:14,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:14,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-06 06:28:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:28:14,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339555436] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:14,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:14,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-06 06:28:14,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592618658] [2021-05-06 06:28:14,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:28:14,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:14,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:28:14,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:28:14,628 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:18,991 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-06 06:28:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 06:28:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-06 06:28:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:18,992 INFO L225 Difference]: With dead ends: 232 [2021-05-06 06:28:18,992 INFO L226 Difference]: Without dead ends: 232 [2021-05-06 06:28:18,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 6336.6ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 06:28:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-06 06:28:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-06 06:28:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.1233480176211454) internal successors, (255), 227 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-06 06:28:18,994 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-06 06:28:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:18,995 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-06 06:28:18,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-06 06:28:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-06 06:28:18,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:18,995 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:19,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:19,196 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-06 06:28:19,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:19,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902455473] [2021-05-06 06:28:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:28:21,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:21,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902455473] [2021-05-06 06:28:21,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902455473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:21,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243670375] [2021-05-06 06:28:21,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:21,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:28:21,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:21,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 06:28:21,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:21,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:28:21,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243670375] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:21,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:21,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-06 06:28:21,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863238008] [2021-05-06 06:28:21,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 06:28:21,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:21,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 06:28:21,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:28:21,971 INFO L87 Difference]: Start difference. First operand 232 states and 259 transitions. Second operand has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:26,401 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-06 06:28:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:28:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-06 06:28:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:26,402 INFO L225 Difference]: With dead ends: 234 [2021-05-06 06:28:26,402 INFO L226 Difference]: Without dead ends: 234 [2021-05-06 06:28:26,403 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 6472.1ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-06 06:28:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-06 06:28:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-06 06:28:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1222707423580787) internal successors, (257), 229 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-06 06:28:26,405 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-06 06:28:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:26,405 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-06 06:28:26,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-06 06:28:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-06 06:28:26,406 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:26,406 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:26,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:26,607 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-06 06:28:26,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:26,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682726468] [2021-05-06 06:28:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:28:29,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:29,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682726468] [2021-05-06 06:28:29,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682726468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:29,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846817223] [2021-05-06 06:28:29,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:29,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-06 06:28:29,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:29,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 06:28:29,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:29,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:30,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:31,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6973 trivial. 0 not checked. [2021-05-06 06:28:31,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846817223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:31,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:31,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-06 06:28:31,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170464859] [2021-05-06 06:28:31,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:28:31,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:28:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:28:31,144 INFO L87 Difference]: Start difference. First operand 234 states and 261 transitions. Second operand has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:38,723 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-06 06:28:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 06:28:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-05-06 06:28:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:38,724 INFO L225 Difference]: With dead ends: 239 [2021-05-06 06:28:38,724 INFO L226 Difference]: Without dead ends: 239 [2021-05-06 06:28:38,726 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 11026.5ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-06 06:28:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-06 06:28:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-06 06:28:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 233 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-06 06:28:38,728 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-06 06:28:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:38,728 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-06 06:28:38,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-06 06:28:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 06:28:38,729 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:38,729 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:38,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:38,945 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:38,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-06 06:28:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:38,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740402406] [2021-05-06 06:28:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:28:41,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:41,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740402406] [2021-05-06 06:28:41,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740402406] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:41,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051426129] [2021-05-06 06:28:41,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:41,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:28:41,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:41,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 06:28:41,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:41,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:28:41,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051426129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:41,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:41,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-06 06:28:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148499371] [2021-05-06 06:28:41,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 06:28:41,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 06:28:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 06:28:41,795 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:46,426 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-06 06:28:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 06:28:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-06 06:28:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:46,427 INFO L225 Difference]: With dead ends: 240 [2021-05-06 06:28:46,427 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 06:28:46,428 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 6694.7ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 06:28:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 06:28:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-06 06:28:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.123404255319149) internal successors, (264), 235 states have internal predecessors, (264), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-06 06:28:46,430 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-06 06:28:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:46,430 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-06 06:28:46,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-06 06:28:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 06:28:46,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:46,431 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:46,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:46,648 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-06 06:28:46,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:46,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118307109] [2021-05-06 06:28:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:28:49,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:49,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118307109] [2021-05-06 06:28:49,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118307109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:49,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149148346] [2021-05-06 06:28:49,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:49,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-06 06:28:49,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:49,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-06 06:28:49,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:28:49,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149148346] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:49,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:49,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-06 06:28:49,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364122321] [2021-05-06 06:28:49,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:28:49,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:49,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:28:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:28:49,643 INFO L87 Difference]: Start difference. First operand 240 states and 268 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:28:54,371 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-06 06:28:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 06:28:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-06 06:28:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:28:54,372 INFO L225 Difference]: With dead ends: 242 [2021-05-06 06:28:54,372 INFO L226 Difference]: Without dead ends: 242 [2021-05-06 06:28:54,373 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 6868.8ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-06 06:28:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-06 06:28:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-06 06:28:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.1223628691983123) internal successors, (266), 237 states have internal predecessors, (266), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-06 06:28:54,375 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-06 06:28:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:28:54,375 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-06 06:28:54,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:28:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-06 06:28:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-06 06:28:54,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:28:54,376 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:28:54,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-06 06:28:54,577 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:28:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:28:54,577 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-06 06:28:54,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:28:54,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342058506] [2021-05-06 06:28:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:28:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:28:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:28:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:28:57,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:28:57,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342058506] [2021-05-06 06:28:57,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342058506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:57,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71781049] [2021-05-06 06:28:57,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:28:57,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-06 06:28:57,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:28:57,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:28:57,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:28:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:58,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:28:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7483 trivial. 0 not checked. [2021-05-06 06:28:59,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71781049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:28:59,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:28:59,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-06 06:28:59,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884426197] [2021-05-06 06:28:59,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-06 06:28:59,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:28:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-06 06:28:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 06:28:59,501 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:07,529 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-06 06:29:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:29:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-06 06:29:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:07,530 INFO L225 Difference]: With dead ends: 247 [2021-05-06 06:29:07,530 INFO L226 Difference]: Without dead ends: 247 [2021-05-06 06:29:07,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 11843.3ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-06 06:29:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-06 06:29:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-06 06:29:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.1244813278008299) internal successors, (271), 241 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-06 06:29:07,533 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-06 06:29:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:07,534 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-06 06:29:07,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-06 06:29:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 06:29:07,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:07,535 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:07,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:07,735 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-06 06:29:07,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:07,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29075183] [2021-05-06 06:29:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:29:10,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:10,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29075183] [2021-05-06 06:29:10,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29075183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:10,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508384813] [2021-05-06 06:29:10,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:10,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-06 06:29:10,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:10,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:29:10,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508384813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:10,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:29:10,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-06 06:29:10,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67191581] [2021-05-06 06:29:10,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-06 06:29:10,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:29:10,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-06 06:29:10,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-06 06:29:10,817 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:15,730 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-06 06:29:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 06:29:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-06 06:29:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:15,731 INFO L225 Difference]: With dead ends: 248 [2021-05-06 06:29:15,731 INFO L226 Difference]: Without dead ends: 248 [2021-05-06 06:29:15,732 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 7190.9ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 06:29:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-06 06:29:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-06 06:29:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.123456790123457) internal successors, (273), 243 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-06 06:29:15,734 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-06 06:29:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:15,734 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-06 06:29:15,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-06 06:29:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-06 06:29:15,735 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:15,735 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:15,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-06 06:29:15,935 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-06 06:29:15,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:15,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654981793] [2021-05-06 06:29:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:29:18,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:18,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654981793] [2021-05-06 06:29:18,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654981793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:18,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247832507] [2021-05-06 06:29:18,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:18,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:29:18,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:29:18,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 06:29:18,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:18,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:18,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:29:19,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247832507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:19,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:29:19,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-06 06:29:19,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445427440] [2021-05-06 06:29:19,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 06:29:19,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:29:19,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 06:29:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:29:19,094 INFO L87 Difference]: Start difference. First operand 248 states and 277 transitions. Second operand has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:24,073 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-06 06:29:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 06:29:24,073 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247 [2021-05-06 06:29:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:24,074 INFO L225 Difference]: With dead ends: 250 [2021-05-06 06:29:24,074 INFO L226 Difference]: Without dead ends: 250 [2021-05-06 06:29:24,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 7351.2ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-06 06:29:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-06 06:29:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-06 06:29:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.1224489795918366) internal successors, (275), 245 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-06 06:29:24,077 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-06 06:29:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:24,077 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-06 06:29:24,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-06 06:29:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-06 06:29:24,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:24,078 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:24,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:24,293 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:24,293 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-06 06:29:24,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:24,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938428545] [2021-05-06 06:29:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:27,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:29:27,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:27,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938428545] [2021-05-06 06:29:27,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938428545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:27,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570158715] [2021-05-06 06:29:27,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:27,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-06 06:29:27,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:29:27,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:29:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2021-05-06 06:29:29,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570158715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:29,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:29:29,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-06 06:29:29,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823715611] [2021-05-06 06:29:29,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 06:29:29,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:29:29,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 06:29:29,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:29:29,449 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:37,975 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-06 06:29:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-06 06:29:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2021-05-06 06:29:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:37,976 INFO L225 Difference]: With dead ends: 255 [2021-05-06 06:29:37,976 INFO L226 Difference]: Without dead ends: 255 [2021-05-06 06:29:37,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 12590.9ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-06 06:29:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-06 06:29:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-06 06:29:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-06 06:29:37,980 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-06 06:29:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:37,980 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-06 06:29:37,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-06 06:29:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-06 06:29:37,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:37,981 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:38,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:38,197 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-06 06:29:38,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:38,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789171873] [2021-05-06 06:29:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:29:41,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:41,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789171873] [2021-05-06 06:29:41,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789171873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:41,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082421281] [2021-05-06 06:29:41,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:41,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:29:41,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:29:41,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 06:29:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:41,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:29:41,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082421281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:41,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:29:41,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-06 06:29:41,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726961092] [2021-05-06 06:29:41,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 06:29:41,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:29:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 06:29:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 06:29:41,457 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:46,605 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-06 06:29:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:29:46,605 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-06 06:29:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:46,606 INFO L225 Difference]: With dead ends: 256 [2021-05-06 06:29:46,606 INFO L226 Difference]: Without dead ends: 256 [2021-05-06 06:29:46,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 7665.6ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 06:29:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-06 06:29:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-06 06:29:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 251 states have internal predecessors, (282), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-06 06:29:46,609 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-06 06:29:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:46,609 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-06 06:29:46,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-06 06:29:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-06 06:29:46,610 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:46,610 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:46,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:46,810 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-06 06:29:46,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:46,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132381929] [2021-05-06 06:29:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:29:49,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:49,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132381929] [2021-05-06 06:29:49,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132381929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:49,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075968684] [2021-05-06 06:29:49,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:49,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-06 06:29:49,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:29:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-06 06:29:49,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:49,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:29:50,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075968684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:50,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:29:50,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-06 06:29:50,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087421601] [2021-05-06 06:29:50,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-06 06:29:50,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:29:50,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-06 06:29:50,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-06 06:29:50,197 INFO L87 Difference]: Start difference. First operand 256 states and 286 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:29:55,426 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-06 06:29:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 06:29:55,426 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2021-05-06 06:29:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:29:55,427 INFO L225 Difference]: With dead ends: 258 [2021-05-06 06:29:55,427 INFO L226 Difference]: Without dead ends: 258 [2021-05-06 06:29:55,428 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 7782.3ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-06 06:29:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-06 06:29:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-06 06:29:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1225296442687747) internal successors, (284), 253 states have internal predecessors, (284), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-06 06:29:55,430 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-06 06:29:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:29:55,430 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-06 06:29:55,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:29:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-06 06:29:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-06 06:29:55,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:29:55,431 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:29:55,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:55,631 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:29:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:29:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-06 06:29:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:29:55,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660856102] [2021-05-06 06:29:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:29:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:29:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:29:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:29:58,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:29:58,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660856102] [2021-05-06 06:29:58,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660856102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:29:58,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294498615] [2021-05-06 06:29:58,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:29:58,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-06 06:29:58,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:29:58,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 06:29:58,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:29:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:29:59,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:00,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:01,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:01,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8557 trivial. 0 not checked. [2021-05-06 06:30:01,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294498615] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:01,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:01,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-06 06:30:01,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255223609] [2021-05-06 06:30:01,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-06 06:30:01,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:01,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-06 06:30:01,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-06 06:30:01,201 INFO L87 Difference]: Start difference. First operand 258 states and 288 transitions. Second operand has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:30:10,316 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-06 06:30:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-06 06:30:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257 [2021-05-06 06:30:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:30:10,317 INFO L225 Difference]: With dead ends: 263 [2021-05-06 06:30:10,317 INFO L226 Difference]: Without dead ends: 263 [2021-05-06 06:30:10,319 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 13449.7ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-06 06:30:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-06 06:30:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-06 06:30:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 257 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-06 06:30:10,321 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-06 06:30:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:30:10,321 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-06 06:30:10,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-06 06:30:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-06 06:30:10,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:30:10,322 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:30:10,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-06 06:30:10,523 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:30:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:30:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-06 06:30:10,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:30:10,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374211975] [2021-05-06 06:30:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:30:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:30:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:30:13,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:30:13,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374211975] [2021-05-06 06:30:13,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374211975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:13,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954715180] [2021-05-06 06:30:13,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:13,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-06 06:30:13,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:30:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:30:13,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954715180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:13,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:13,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-06 06:30:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070810732] [2021-05-06 06:30:14,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:30:14,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:30:14,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:30:14,001 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:19,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:30:19,555 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-06 06:30:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 06:30:19,556 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-06 06:30:19,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:30:19,556 INFO L225 Difference]: With dead ends: 264 [2021-05-06 06:30:19,557 INFO L226 Difference]: Without dead ends: 264 [2021-05-06 06:30:19,558 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 8159.5ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-06 06:30:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-06 06:30:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-06 06:30:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1235521235521235) internal successors, (291), 259 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-06 06:30:19,568 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-06 06:30:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:30:19,569 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-06 06:30:19,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-06 06:30:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-06 06:30:19,570 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:30:19,570 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:30:19,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:19,771 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:30:19,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:30:19,771 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-06 06:30:19,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:30:19,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234801840] [2021-05-06 06:30:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:30:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:30:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:30:22,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:30:22,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234801840] [2021-05-06 06:30:22,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234801840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:22,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879091490] [2021-05-06 06:30:22,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:22,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:30:22,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:30:22,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 06:30:22,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:30:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:30:23,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879091490] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:23,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:23,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-06 06:30:23,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895679364] [2021-05-06 06:30:23,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 06:30:23,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 06:30:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:30:23,351 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:30:28,896 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-06 06:30:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:30:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-05-06 06:30:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:30:28,897 INFO L225 Difference]: With dead ends: 266 [2021-05-06 06:30:28,897 INFO L226 Difference]: Without dead ends: 266 [2021-05-06 06:30:28,899 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 8299.6ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-06 06:30:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-06 06:30:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-06 06:30:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.1226053639846743) internal successors, (293), 261 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-06 06:30:28,900 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-06 06:30:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:30:28,901 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-06 06:30:28,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-06 06:30:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-06 06:30:28,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:30:28,902 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:30:29,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-06 06:30:29,102 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:30:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:30:29,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-06 06:30:29,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:30:29,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182038651] [2021-05-06 06:30:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:30:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:30:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:30:32,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:30:32,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182038651] [2021-05-06 06:30:32,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182038651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:32,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494040330] [2021-05-06 06:30:32,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:32,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-06 06:30:32,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:30:32,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:30:32,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:30:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9121 trivial. 0 not checked. [2021-05-06 06:30:34,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494040330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:34,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:34,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-06 06:30:34,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692537008] [2021-05-06 06:30:34,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-06 06:30:34,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-06 06:30:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:30:34,973 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:30:44,570 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-06 06:30:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-06 06:30:44,571 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2021-05-06 06:30:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:30:44,571 INFO L225 Difference]: With dead ends: 271 [2021-05-06 06:30:44,571 INFO L226 Difference]: Without dead ends: 271 [2021-05-06 06:30:44,573 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 14252.7ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-06 06:30:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-06 06:30:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-06 06:30:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1245283018867924) internal successors, (298), 265 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-06 06:30:44,575 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-06 06:30:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:30:44,576 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-06 06:30:44,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-06 06:30:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-06 06:30:44,576 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:30:44,577 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:30:44,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:44,777 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:30:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:30:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-06 06:30:44,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:30:44,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176445702] [2021-05-06 06:30:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:30:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:30:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:30:48,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:30:48,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176445702] [2021-05-06 06:30:48,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176445702] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:48,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080815345] [2021-05-06 06:30:48,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:48,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:30:48,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:30:48,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 06:30:48,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:30:48,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:30:48,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080815345] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:48,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:48,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-06 06:30:48,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615406083] [2021-05-06 06:30:48,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 06:30:48,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:48,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 06:30:48,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 06:30:48,460 INFO L87 Difference]: Start difference. First operand 270 states and 302 transitions. Second operand has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:30:54,284 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-06 06:30:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 06:30:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-06 06:30:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:30:54,285 INFO L225 Difference]: With dead ends: 272 [2021-05-06 06:30:54,285 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 06:30:54,287 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 8636.1ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-06 06:30:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 06:30:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 06:30:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.1235955056179776) internal successors, (300), 267 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-06 06:30:54,289 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-06 06:30:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:30:54,289 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-06 06:30:54,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:30:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-06 06:30:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-06 06:30:54,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:30:54,290 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:30:54,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:54,490 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:30:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:30:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-06 06:30:54,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:30:54,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700450690] [2021-05-06 06:30:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:30:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:30:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:30:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:30:57,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:30:57,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700450690] [2021-05-06 06:30:57,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700450690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:57,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636004359] [2021-05-06 06:30:57,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:30:57,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-06 06:30:57,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:30:57,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-06 06:30:57,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:30:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:57,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:30:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:30:58,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636004359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:30:58,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:30:58,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-06 06:30:58,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732223363] [2021-05-06 06:30:58,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:30:58,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:30:58,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:30:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:30:58,320 INFO L87 Difference]: Start difference. First operand 272 states and 304 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:04,307 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-06 06:31:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 06:31:04,307 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2021-05-06 06:31:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:04,308 INFO L225 Difference]: With dead ends: 274 [2021-05-06 06:31:04,308 INFO L226 Difference]: Without dead ends: 274 [2021-05-06 06:31:04,309 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 8772.3ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-06 06:31:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-06 06:31:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-06 06:31:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.1226765799256506) internal successors, (302), 269 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-06 06:31:04,311 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-06 06:31:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:04,311 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-06 06:31:04,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-06 06:31:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-06 06:31:04,312 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:04,312 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:04,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-06 06:31:04,530 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-06 06:31:04,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:04,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868070372] [2021-05-06 06:31:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:31:07,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:07,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868070372] [2021-05-06 06:31:07,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868070372] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:07,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021827022] [2021-05-06 06:31:07,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:08,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-06 06:31:08,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:31:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:08,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:08,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9703 trivial. 0 not checked. [2021-05-06 06:31:10,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021827022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:10,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:10,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-06 06:31:10,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082174337] [2021-05-06 06:31:10,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-06 06:31:10,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-06 06:31:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-06 06:31:10,901 INFO L87 Difference]: Start difference. First operand 274 states and 306 transitions. Second operand has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:21,150 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-06 06:31:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-06 06:31:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273 [2021-05-06 06:31:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:21,151 INFO L225 Difference]: With dead ends: 279 [2021-05-06 06:31:21,151 INFO L226 Difference]: Without dead ends: 279 [2021-05-06 06:31:21,154 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 15250.0ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-06 06:31:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-06 06:31:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-06 06:31:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.1245421245421245) internal successors, (307), 273 states have internal predecessors, (307), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-06 06:31:21,156 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-06 06:31:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:21,156 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-06 06:31:21,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-06 06:31:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-06 06:31:21,157 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:21,157 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:21,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-06 06:31:21,373 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-06 06:31:21,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:21,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674892710] [2021-05-06 06:31:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:31:24,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:24,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674892710] [2021-05-06 06:31:24,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674892710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:24,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769818574] [2021-05-06 06:31:24,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:24,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 06:31:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:24,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:24,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:31:25,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769818574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:25,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:25,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-06 06:31:25,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171111791] [2021-05-06 06:31:25,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-06 06:31:25,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-06 06:31:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-06 06:31:25,330 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:31,468 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-06 06:31:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 06:31:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-06 06:31:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:31,469 INFO L225 Difference]: With dead ends: 280 [2021-05-06 06:31:31,469 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 06:31:31,470 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 9194.4ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-06 06:31:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 06:31:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-06 06:31:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.1236363636363635) internal successors, (309), 275 states have internal predecessors, (309), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-06 06:31:31,472 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-06 06:31:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:31,472 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-06 06:31:31,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-06 06:31:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-06 06:31:31,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:31,473 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:31,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:31,674 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-06 06:31:31,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:31,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395154117] [2021-05-06 06:31:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:31:35,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395154117] [2021-05-06 06:31:35,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395154117] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261289951] [2021-05-06 06:31:35,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:35,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:35,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:35,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 06:31:35,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:35,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:31:35,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261289951] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:35,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:35,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-06 06:31:35,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180986618] [2021-05-06 06:31:35,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 06:31:35,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:35,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 06:31:35,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:31:35,657 INFO L87 Difference]: Start difference. First operand 280 states and 313 transitions. Second operand has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:41,970 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-06 06:31:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 06:31:41,970 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2021-05-06 06:31:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:41,971 INFO L225 Difference]: With dead ends: 282 [2021-05-06 06:31:41,971 INFO L226 Difference]: Without dead ends: 282 [2021-05-06 06:31:41,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 9337.8ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-06 06:31:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-06 06:31:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-06 06:31:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.1227436823104693) internal successors, (311), 277 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-06 06:31:41,974 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-06 06:31:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:41,975 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-06 06:31:41,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-06 06:31:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-06 06:31:41,975 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:41,976 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:42,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-06 06:31:42,176 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:42,176 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-06 06:31:42,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:42,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491504624] [2021-05-06 06:31:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:31:45,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:45,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491504624] [2021-05-06 06:31:45,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491504624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:45,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622980358] [2021-05-06 06:31:45,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:45,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-06 06:31:45,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:45,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 06:31:45,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-05-06 06:31:48,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622980358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:48,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:48,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-06 06:31:48,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072330734] [2021-05-06 06:31:48,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-06 06:31:48,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:48,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-06 06:31:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:31:48,778 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:59,426 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-06 06:31:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-06 06:31:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2021-05-06 06:31:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:59,427 INFO L225 Difference]: With dead ends: 287 [2021-05-06 06:31:59,428 INFO L226 Difference]: Without dead ends: 287 [2021-05-06 06:31:59,430 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 15903.6ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-06 06:31:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-06 06:31:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-06 06:31:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1245551601423487) internal successors, (316), 281 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-06 06:31:59,432 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-06 06:31:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:59,432 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-06 06:31:59,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-06 06:31:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-06 06:31:59,433 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:59,433 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:59,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-06 06:31:59,649 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:59,650 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-06 06:31:59,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:59,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823690470] [2021-05-06 06:31:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:32:03,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:03,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823690470] [2021-05-06 06:32:03,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823690470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:03,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17420766] [2021-05-06 06:32:03,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:03,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:03,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:03,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-06 06:32:03,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:03,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:32:03,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17420766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:03,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:03,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-06 06:32:03,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107221924] [2021-05-06 06:32:03,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 06:32:03,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 06:32:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 06:32:03,739 INFO L87 Difference]: Start difference. First operand 286 states and 320 transitions. Second operand has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:10,250 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-06 06:32:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:32:10,250 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-05-06 06:32:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:10,250 INFO L225 Difference]: With dead ends: 288 [2021-05-06 06:32:10,250 INFO L226 Difference]: Without dead ends: 288 [2021-05-06 06:32:10,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 9622.4ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-06 06:32:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-06 06:32:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-06 06:32:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.1236749116607774) internal successors, (318), 283 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-06 06:32:10,254 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-06 06:32:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:10,254 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-06 06:32:10,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-06 06:32:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-06 06:32:10,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:10,255 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:10,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-06 06:32:10,456 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-06 06:32:10,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:10,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738601141] [2021-05-06 06:32:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:14,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:32:14,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:14,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738601141] [2021-05-06 06:32:14,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738601141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:14,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585819306] [2021-05-06 06:32:14,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:14,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-06 06:32:14,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:14,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-06 06:32:14,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:14,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:32:14,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585819306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:14,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:14,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-06 06:32:14,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912744441] [2021-05-06 06:32:14,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-06 06:32:14,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-06 06:32:14,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-06 06:32:14,726 INFO L87 Difference]: Start difference. First operand 288 states and 322 transitions. Second operand has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:21,328 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-06 06:32:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 06:32:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-05-06 06:32:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:21,329 INFO L225 Difference]: With dead ends: 290 [2021-05-06 06:32:21,329 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 06:32:21,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 9793.1ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-06 06:32:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 06:32:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-06 06:32:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1228070175438596) internal successors, (320), 285 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-06 06:32:21,332 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-06 06:32:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:21,332 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-06 06:32:21,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-06 06:32:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-06 06:32:21,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:21,333 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:21,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:21,534 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-06 06:32:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:21,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350344309] [2021-05-06 06:32:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:32:25,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:25,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350344309] [2021-05-06 06:32:25,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350344309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:25,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512489222] [2021-05-06 06:32:25,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:25,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-06 06:32:25,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:25,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:32:25,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10921 trivial. 0 not checked. [2021-05-06 06:32:28,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512489222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:28,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:28,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-06 06:32:28,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875153583] [2021-05-06 06:32:28,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-06 06:32:28,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-06 06:32:28,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 06:32:28,596 INFO L87 Difference]: Start difference. First operand 290 states and 324 transitions. Second operand has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:39,886 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-06 06:32:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-06 06:32:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 289 [2021-05-06 06:32:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:39,887 INFO L225 Difference]: With dead ends: 295 [2021-05-06 06:32:39,887 INFO L226 Difference]: Without dead ends: 295 [2021-05-06 06:32:39,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 16872.7ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-06 06:32:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-06 06:32:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-06 06:32:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.1245674740484428) internal successors, (325), 289 states have internal predecessors, (325), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-06 06:32:39,892 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-06 06:32:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:39,892 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-06 06:32:39,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-06 06:32:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 06:32:39,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:39,893 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:40,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-06 06:32:40,111 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-06 06:32:40,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:40,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254331726] [2021-05-06 06:32:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:32:43,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:43,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254331726] [2021-05-06 06:32:43,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254331726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:43,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360773793] [2021-05-06 06:32:43,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:44,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-06 06:32:44,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:44,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:32:44,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360773793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:44,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:44,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-06 06:32:44,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768111996] [2021-05-06 06:32:44,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:32:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:32:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:32:44,453 INFO L87 Difference]: Start difference. First operand 294 states and 329 transitions. Second operand has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:51,174 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-06 06:32:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 06:32:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 293 [2021-05-06 06:32:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:51,175 INFO L225 Difference]: With dead ends: 296 [2021-05-06 06:32:51,175 INFO L226 Difference]: Without dead ends: 296 [2021-05-06 06:32:51,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 10173.5ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-06 06:32:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-06 06:32:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-06 06:32:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.1237113402061856) internal successors, (327), 291 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-06 06:32:51,179 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-06 06:32:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:51,179 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-06 06:32:51,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-06 06:32:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-06 06:32:51,180 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:51,180 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:51,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-06 06:32:51,393 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-06 06:32:51,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:51,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598270213] [2021-05-06 06:32:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:55,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:32:55,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:55,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598270213] [2021-05-06 06:32:55,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598270213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:55,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722669740] [2021-05-06 06:32:55,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:55,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:55,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:55,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-06 06:32:55,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:55,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:32:55,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722669740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:55,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:55,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-06 06:32:55,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022335355] [2021-05-06 06:32:55,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 06:32:55,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 06:32:55,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:32:55,817 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:02,625 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-06 06:33:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:33:02,625 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2021-05-06 06:33:02,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:02,626 INFO L225 Difference]: With dead ends: 298 [2021-05-06 06:33:02,626 INFO L226 Difference]: Without dead ends: 298 [2021-05-06 06:33:02,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 10336.6ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-06 06:33:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-06 06:33:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-06 06:33:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 293 states have (on average 1.1228668941979523) internal successors, (329), 293 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-06 06:33:02,629 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-06 06:33:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:02,629 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-06 06:33:02,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-06 06:33:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-06 06:33:02,630 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:02,630 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:02,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:02,831 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-06 06:33:02,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:02,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963837234] [2021-05-06 06:33:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:06,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:33:06,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963837234] [2021-05-06 06:33:06,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963837234] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964425294] [2021-05-06 06:33:06,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:06,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-06 06:33:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:06,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:33:06,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:07,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:07,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:10,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:10,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7452 proven. 1156 refuted. 0 times theorem prover too weak. 11557 trivial. 0 not checked. [2021-05-06 06:33:10,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964425294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:10,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:10,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-06 06:33:10,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330740306] [2021-05-06 06:33:10,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-06 06:33:10,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-06 06:33:10,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:33:10,239 INFO L87 Difference]: Start difference. First operand 298 states and 333 transitions. Second operand has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:22,184 INFO L93 Difference]: Finished difference Result 303 states and 340 transitions. [2021-05-06 06:33:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-06 06:33:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 297 [2021-05-06 06:33:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:22,185 INFO L225 Difference]: With dead ends: 303 [2021-05-06 06:33:22,185 INFO L226 Difference]: Without dead ends: 303 [2021-05-06 06:33:22,187 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 17880.9ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-06 06:33:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-05-06 06:33:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-05-06 06:33:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 297 states have (on average 1.1245791245791246) internal successors, (334), 297 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 338 transitions. [2021-05-06 06:33:22,189 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 338 transitions. Word has length 297 [2021-05-06 06:33:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:22,189 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 338 transitions. [2021-05-06 06:33:22,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 338 transitions. [2021-05-06 06:33:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-06 06:33:22,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:22,190 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:22,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:22,391 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:22,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:22,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1755440904, now seen corresponding path program 106 times [2021-05-06 06:33:22,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:22,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440150970] [2021-05-06 06:33:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:33:26,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:26,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440150970] [2021-05-06 06:33:26,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440150970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:26,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865055850] [2021-05-06 06:33:26,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:26,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:33:26,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:26,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-06 06:33:26,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:26,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:33:26,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865055850] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:26,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:26,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-06 06:33:26,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756709277] [2021-05-06 06:33:26,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 06:33:26,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 06:33:26,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 06:33:26,976 INFO L87 Difference]: Start difference. First operand 302 states and 338 transitions. Second operand has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:34,183 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2021-05-06 06:33:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 06:33:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 301 [2021-05-06 06:33:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:34,184 INFO L225 Difference]: With dead ends: 304 [2021-05-06 06:33:34,184 INFO L226 Difference]: Without dead ends: 304 [2021-05-06 06:33:34,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 10739.6ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-06 06:33:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-06 06:33:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-06 06:33:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 299 states have (on average 1.1237458193979932) internal successors, (336), 299 states have internal predecessors, (336), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 340 transitions. [2021-05-06 06:33:34,187 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 340 transitions. Word has length 301 [2021-05-06 06:33:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:34,188 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 340 transitions. [2021-05-06 06:33:34,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 340 transitions. [2021-05-06 06:33:34,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-06 06:33:34,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:34,189 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:34,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:34,389 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1856117860, now seen corresponding path program 107 times [2021-05-06 06:33:34,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:34,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581562006] [2021-05-06 06:33:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21026 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:33:38,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:38,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581562006] [2021-05-06 06:33:38,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581562006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:38,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866597154] [2021-05-06 06:33:38,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:38,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 146 check-sat command(s) [2021-05-06 06:33:38,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-06 06:33:38,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:38,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:38,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21026 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:33:39,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866597154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:39,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:39,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-06 06:33:39,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182775046] [2021-05-06 06:33:39,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:33:39,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:39,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:33:39,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:33:39,131 INFO L87 Difference]: Start difference. First operand 304 states and 340 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:46,293 INFO L93 Difference]: Finished difference Result 306 states and 342 transitions. [2021-05-06 06:33:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 06:33:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 303 [2021-05-06 06:33:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:46,294 INFO L225 Difference]: With dead ends: 306 [2021-05-06 06:33:46,294 INFO L226 Difference]: Without dead ends: 306 [2021-05-06 06:33:46,296 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 10910.9ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-06 06:33:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-05-06 06:33:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-05-06 06:33:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.1229235880398671) internal successors, (338), 301 states have internal predecessors, (338), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 342 transitions. [2021-05-06 06:33:46,298 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 342 transitions. Word has length 303 [2021-05-06 06:33:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:46,298 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 342 transitions. [2021-05-06 06:33:46,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 342 transitions. [2021-05-06 06:33:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-05-06 06:33:46,299 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:46,299 INFO L523 BasicCegarLoop]: trace histogram [146, 111, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:46,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:46,499 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash -177575232, now seen corresponding path program 108 times [2021-05-06 06:33:46,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:46,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069545533] [2021-05-06 06:33:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21317 backedges. 7728 proven. 12432 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:33:50,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:50,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069545533] [2021-05-06 06:33:50,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069545533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:50,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424542981] [2021-05-06 06:33:50,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:50,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2021-05-06 06:33:50,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:50,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 06:33:50,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:51,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21317 backedges. 7881 proven. 1225 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2021-05-06 06:33:54,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424542981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:54,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:54,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 38] total 151 [2021-05-06 06:33:54,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432488552] [2021-05-06 06:33:54,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 151 states [2021-05-06 06:33:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:54,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-05-06 06:33:54,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2021-05-06 06:33:54,369 INFO L87 Difference]: Start difference. First operand 306 states and 342 transitions. Second operand has 151 states, 151 states have (on average 2.0596026490066226) internal successors, (311), 150 states have internal predecessors, (311), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:06,936 INFO L93 Difference]: Finished difference Result 311 states and 349 transitions. [2021-05-06 06:34:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-05-06 06:34:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.0596026490066226) internal successors, (311), 150 states have internal predecessors, (311), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 305 [2021-05-06 06:34:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:06,937 INFO L225 Difference]: With dead ends: 311 [2021-05-06 06:34:06,937 INFO L226 Difference]: Without dead ends: 311 [2021-05-06 06:34:06,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10989 ImplicationChecksByTransitivity, 18776.7ms TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2021-05-06 06:34:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-05-06 06:34:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2021-05-06 06:34:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 1.1245901639344262) internal successors, (343), 305 states have internal predecessors, (343), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 347 transitions. [2021-05-06 06:34:06,941 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 347 transitions. Word has length 305 [2021-05-06 06:34:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:06,941 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 347 transitions. [2021-05-06 06:34:06,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 151 states, 151 states have (on average 2.0596026490066226) internal successors, (311), 150 states have internal predecessors, (311), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 347 transitions. [2021-05-06 06:34:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-05-06 06:34:06,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:06,942 INFO L523 BasicCegarLoop]: trace histogram [148, 112, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:07,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-06 06:34:07,143 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash 928752663, now seen corresponding path program 109 times [2021-05-06 06:34:07,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:07,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909666379] [2021-05-06 06:34:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21905 backedges. 8023 proven. 12656 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-05-06 06:34:11,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:11,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909666379] [2021-05-06 06:34:11,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909666379] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:11,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309578558] [2021-05-06 06:34:11,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-06 06:34:11,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:11,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21905 backedges. 8023 proven. 12656 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-05-06 06:34:11,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309578558] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:11,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:11,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 117 [2021-05-06 06:34:11,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002239981] [2021-05-06 06:34:11,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-06 06:34:11,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:11,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-06 06:34:11,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2021-05-06 06:34:11,962 INFO L87 Difference]: Start difference. First operand 310 states and 347 transitions. Second operand has 117 states, 117 states have (on average 2.0598290598290596) internal successors, (241), 116 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:19,384 INFO L93 Difference]: Finished difference Result 312 states and 349 transitions. [2021-05-06 06:34:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-06 06:34:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0598290598290596) internal successors, (241), 116 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 309 [2021-05-06 06:34:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:19,385 INFO L225 Difference]: With dead ends: 312 [2021-05-06 06:34:19,385 INFO L226 Difference]: Without dead ends: 312 [2021-05-06 06:34:19,386 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 11247.4ms TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2021-05-06 06:34:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-06 06:34:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-05-06 06:34:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 307 states have (on average 1.1237785016286646) internal successors, (345), 307 states have internal predecessors, (345), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 349 transitions. [2021-05-06 06:34:19,388 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 349 transitions. Word has length 309 [2021-05-06 06:34:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:19,388 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 349 transitions. [2021-05-06 06:34:19,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0598290598290596) internal successors, (241), 116 states have internal predecessors, (241), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 349 transitions. [2021-05-06 06:34:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-06 06:34:19,389 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:19,389 INFO L523 BasicCegarLoop]: trace histogram [149, 113, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:19,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-06 06:34:19,589 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1326531213, now seen corresponding path program 110 times [2021-05-06 06:34:19,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:19,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097689525] [2021-05-06 06:34:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22202 backedges. 8094 proven. 12882 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-05-06 06:34:23,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:23,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097689525] [2021-05-06 06:34:23,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097689525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:23,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122512922] [2021-05-06 06:34:23,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:24,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:24,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:24,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-06 06:34:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 22202 backedges. 8094 proven. 12882 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-05-06 06:34:24,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122512922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:24,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:24,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 118 [2021-05-06 06:34:24,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34003691] [2021-05-06 06:34:24,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 06:34:24,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:24,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 06:34:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:34:24,450 INFO L87 Difference]: Start difference. First operand 312 states and 349 transitions. Second operand has 118 states, 118 states have (on average 2.059322033898305) internal successors, (243), 117 states have internal predecessors, (243), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:32,101 INFO L93 Difference]: Finished difference Result 314 states and 351 transitions. [2021-05-06 06:34:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-06 06:34:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.059322033898305) internal successors, (243), 117 states have internal predecessors, (243), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 311 [2021-05-06 06:34:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:32,102 INFO L225 Difference]: With dead ends: 314 [2021-05-06 06:34:32,102 INFO L226 Difference]: Without dead ends: 314 [2021-05-06 06:34:32,103 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 11417.6ms TimeCoverageRelationStatistics Valid=20127, Invalid=33465, Unknown=0, NotChecked=0, Total=53592 [2021-05-06 06:34:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-05-06 06:34:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-05-06 06:34:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 309 states have (on average 1.1229773462783172) internal successors, (347), 309 states have internal predecessors, (347), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 351 transitions. [2021-05-06 06:34:32,105 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 351 transitions. Word has length 311 [2021-05-06 06:34:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:32,105 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 351 transitions. [2021-05-06 06:34:32,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.059322033898305) internal successors, (243), 117 states have internal predecessors, (243), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 351 transitions. [2021-05-06 06:34:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-05-06 06:34:32,106 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:32,106 INFO L523 BasicCegarLoop]: trace histogram [150, 114, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:32,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-06 06:34:32,307 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 304148431, now seen corresponding path program 111 times [2021-05-06 06:34:32,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:32,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496032733] [2021-05-06 06:34:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22501 backedges. 8165 proven. 13110 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-05-06 06:34:36,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:36,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496032733] [2021-05-06 06:34:36,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496032733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:36,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937433334] [2021-05-06 06:34:36,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:36,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 74 check-sat command(s) [2021-05-06 06:34:36,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:36,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:34:36,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:37,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:37,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22501 backedges. 8322 proven. 1296 refuted. 0 times theorem prover too weak. 12883 trivial. 0 not checked. [2021-05-06 06:34:40,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937433334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:40,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 39] total 155 [2021-05-06 06:34:40,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887103793] [2021-05-06 06:34:40,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states [2021-05-06 06:34:40,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:40,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2021-05-06 06:34:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:34:40,522 INFO L87 Difference]: Start difference. First operand 314 states and 351 transitions. Second operand has 155 states, 155 states have (on average 2.0580645161290323) internal successors, (319), 154 states have internal predecessors, (319), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:53,729 INFO L93 Difference]: Finished difference Result 319 states and 358 transitions. [2021-05-06 06:34:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-05-06 06:34:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.0580645161290323) internal successors, (319), 154 states have internal predecessors, (319), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 313 [2021-05-06 06:34:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:53,730 INFO L225 Difference]: With dead ends: 319 [2021-05-06 06:34:53,730 INFO L226 Difference]: Without dead ends: 319 [2021-05-06 06:34:53,733 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11590 ImplicationChecksByTransitivity, 19821.2ms TimeCoverageRelationStatistics Valid=35343, Invalid=58599, Unknown=0, NotChecked=0, Total=93942 [2021-05-06 06:34:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-05-06 06:34:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2021-05-06 06:34:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.1246006389776357) internal successors, (352), 313 states have internal predecessors, (352), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 356 transitions. [2021-05-06 06:34:53,735 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 356 transitions. Word has length 313 [2021-05-06 06:34:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:53,735 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 356 transitions. [2021-05-06 06:34:53,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 155 states, 155 states have (on average 2.0580645161290323) internal successors, (319), 154 states have internal predecessors, (319), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 356 transitions. [2021-05-06 06:34:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-05-06 06:34:53,736 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:53,736 INFO L523 BasicCegarLoop]: trace histogram [152, 115, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:53,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:53,936 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:53,937 INFO L82 PathProgramCache]: Analyzing trace with hash 190645606, now seen corresponding path program 112 times [2021-05-06 06:34:53,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:53,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674084973] [2021-05-06 06:34:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 23105 backedges. 8468 proven. 13340 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-05-06 06:34:58,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:58,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674084973] [2021-05-06 06:34:58,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674084973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:58,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338331159] [2021-05-06 06:34:58,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:58,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:58,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:58,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-06 06:34:58,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:58,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:58,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 23105 backedges. 8468 proven. 13340 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-05-06 06:34:59,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338331159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:59,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:59,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118] total 120 [2021-05-06 06:34:59,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762963348] [2021-05-06 06:34:59,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-06 06:34:59,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:59,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-06 06:34:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 06:34:59,078 INFO L87 Difference]: Start difference. First operand 318 states and 356 transitions. Second operand has 120 states, 120 states have (on average 2.058333333333333) internal successors, (247), 119 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:06,989 INFO L93 Difference]: Finished difference Result 320 states and 358 transitions. [2021-05-06 06:35:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:35:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.058333333333333) internal successors, (247), 119 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 317 [2021-05-06 06:35:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:06,990 INFO L225 Difference]: With dead ends: 320 [2021-05-06 06:35:06,990 INFO L226 Difference]: Without dead ends: 320 [2021-05-06 06:35:06,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7127 ImplicationChecksByTransitivity, 12037.0ms TimeCoverageRelationStatistics Valid=20828, Invalid=34632, Unknown=0, NotChecked=0, Total=55460 [2021-05-06 06:35:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-05-06 06:35:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-05-06 06:35:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.1238095238095238) internal successors, (354), 315 states have internal predecessors, (354), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 358 transitions. [2021-05-06 06:35:06,993 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 358 transitions. Word has length 317 [2021-05-06 06:35:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:06,994 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 358 transitions. [2021-05-06 06:35:06,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.058333333333333) internal successors, (247), 119 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 358 transitions. [2021-05-06 06:35:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-05-06 06:35:06,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:06,995 INFO L523 BasicCegarLoop]: trace histogram [153, 116, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:07,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-05-06 06:35:07,195 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:07,195 INFO L82 PathProgramCache]: Analyzing trace with hash 962527938, now seen corresponding path program 113 times [2021-05-06 06:35:07,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:07,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550788933] [2021-05-06 06:35:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23410 backedges. 8541 proven. 13572 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-05-06 06:35:11,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:11,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550788933] [2021-05-06 06:35:11,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550788933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:11,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499748948] [2021-05-06 06:35:11,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:12,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 154 check-sat command(s) [2021-05-06 06:35:12,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 118 conjunts are in the unsatisfiable core [2021-05-06 06:35:12,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 23410 backedges. 8541 proven. 13572 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-05-06 06:35:12,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499748948] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:12,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:12,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119] total 121 [2021-05-06 06:35:12,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923062227] [2021-05-06 06:35:12,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 121 states [2021-05-06 06:35:12,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-05-06 06:35:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2021-05-06 06:35:12,557 INFO L87 Difference]: Start difference. First operand 320 states and 358 transitions. Second operand has 121 states, 121 states have (on average 2.0578512396694215) internal successors, (249), 120 states have internal predecessors, (249), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:20,727 INFO L93 Difference]: Finished difference Result 322 states and 360 transitions. [2021-05-06 06:35:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-06 06:35:20,727 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.0578512396694215) internal successors, (249), 120 states have internal predecessors, (249), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 319 [2021-05-06 06:35:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:20,728 INFO L225 Difference]: With dead ends: 322 [2021-05-06 06:35:20,728 INFO L226 Difference]: Without dead ends: 322 [2021-05-06 06:35:20,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7247 ImplicationChecksByTransitivity, 12292.7ms TimeCoverageRelationStatistics Valid=21183, Invalid=35223, Unknown=0, NotChecked=0, Total=56406 [2021-05-06 06:35:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-05-06 06:35:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-05-06 06:35:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.1230283911671923) internal successors, (356), 317 states have internal predecessors, (356), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 360 transitions. [2021-05-06 06:35:20,731 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 360 transitions. Word has length 319 [2021-05-06 06:35:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:20,731 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 360 transitions. [2021-05-06 06:35:20,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 121 states, 121 states have (on average 2.0578512396694215) internal successors, (249), 120 states have internal predecessors, (249), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 360 transitions. [2021-05-06 06:35:20,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-05-06 06:35:20,732 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:20,732 INFO L523 BasicCegarLoop]: trace histogram [154, 117, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:20,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:20,933 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash -287893218, now seen corresponding path program 114 times [2021-05-06 06:35:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:20,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573643638] [2021-05-06 06:35:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23717 backedges. 8614 proven. 13806 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-05-06 06:35:25,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:25,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573643638] [2021-05-06 06:35:25,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573643638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:25,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690477544] [2021-05-06 06:35:25,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:25,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2021-05-06 06:35:25,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:26,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:35:26,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:26,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:28,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23717 backedges. 8775 proven. 1369 refuted. 0 times theorem prover too weak. 13573 trivial. 0 not checked. [2021-05-06 06:35:29,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690477544] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:29,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:29,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 40] total 159 [2021-05-06 06:35:29,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283819474] [2021-05-06 06:35:29,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 159 states [2021-05-06 06:35:29,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:29,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2021-05-06 06:35:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2021-05-06 06:35:29,927 INFO L87 Difference]: Start difference. First operand 322 states and 360 transitions. Second operand has 159 states, 159 states have (on average 2.056603773584906) internal successors, (327), 158 states have internal predecessors, (327), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:43,925 INFO L93 Difference]: Finished difference Result 327 states and 367 transitions. [2021-05-06 06:35:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-05-06 06:35:43,926 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 2.056603773584906) internal successors, (327), 158 states have internal predecessors, (327), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 321 [2021-05-06 06:35:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:43,926 INFO L225 Difference]: With dead ends: 327 [2021-05-06 06:35:43,926 INFO L226 Difference]: Without dead ends: 327 [2021-05-06 06:35:43,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12207 ImplicationChecksByTransitivity, 21199.0ms TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910 [2021-05-06 06:35:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-05-06 06:35:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326. [2021-05-06 06:35:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.1246105919003115) internal successors, (361), 321 states have internal predecessors, (361), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 365 transitions. [2021-05-06 06:35:43,931 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 365 transitions. Word has length 321 [2021-05-06 06:35:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:43,931 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 365 transitions. [2021-05-06 06:35:43,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 159 states, 159 states have (on average 2.056603773584906) internal successors, (327), 158 states have internal predecessors, (327), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 365 transitions. [2021-05-06 06:35:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-05-06 06:35:43,932 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:43,932 INFO L523 BasicCegarLoop]: trace histogram [156, 118, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:44,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-05-06 06:35:44,132 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:44,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:44,133 INFO L82 PathProgramCache]: Analyzing trace with hash -907937035, now seen corresponding path program 115 times [2021-05-06 06:35:44,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:44,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563285631] [2021-05-06 06:35:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat