/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_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:31:48,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:31:48,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:31:48,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:31:48,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:31:48,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:31:48,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:31:48,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:31:48,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:31:48,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:31:48,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:31:48,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:31:48,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:31:48,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:31:48,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:31:48,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:31:48,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:31:48,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:31:48,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:31:48,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:31:48,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:31:48,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:31:48,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:31:48,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:31:48,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:31:48,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:31:48,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:31:48,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:31:48,585 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:31:48,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:31:48,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:31:48,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:31:48,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:31:48,840 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:31:48,840 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:31:48,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2021-05-06 06:31:48,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f4c419f/5dff877b91fc451ab226fb2d58408fca/FLAG2bcd33ac4 [2021-05-06 06:31:49,216 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:31:49,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2021-05-06 06:31:49,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f4c419f/5dff877b91fc451ab226fb2d58408fca/FLAG2bcd33ac4 [2021-05-06 06:31:49,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f4c419f/5dff877b91fc451ab226fb2d58408fca [2021-05-06 06:31:49,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:31:49,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:31:49,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:31:49,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:31:49,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:31:49,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3b057f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49, skipping insertion in model container [2021-05-06 06:31:49,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:31:49,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:31:49,733 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_7.c[318,331] [2021-05-06 06:31:49,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:31:49,748 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:31:49,755 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_7.c[318,331] [2021-05-06 06:31:49,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:31:49,766 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:31:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49 WrapperNode [2021-05-06 06:31:49,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:31:49,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:31:49,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:31:49,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:31:49,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (1/1) ... [2021-05-06 06:31:49,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:31:49,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:31:49,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:31:49,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:31:49,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (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 06:31:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:31:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:31:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:31:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:31:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:31:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:31:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:31:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:31:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:31:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:31:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:31:50,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:31:50,131 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 06:31:50,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:50 BoogieIcfgContainer [2021-05-06 06:31:50,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:31:50,133 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:31:50,133 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:31:50,133 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:31:50,135 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:50" (1/1) ... [2021-05-06 06:31:50,223 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 94.3 percent of original size [2021-05-06 06:31:50,320 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 94.3 percent of original size 50 [2021-05-06 06:31:50,358 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:31:50,358 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_2 (+ v_main_~x~0_3 (- 2))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (- 2))) (< 0 v_main_~y~0_2)) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_1} AuxVars[] AssignedVars[main_~x~0, main_~y~0] 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_~y~0_2 0)) (let ((.cse0 (* 2 v_itFin_1))) (and (< 0 v_itFin_1) (< v_itFin_1 (+ (div (+ v_main_~y~0_2 (- 1)) 2) 2)) (= v_main_~x~0_3 (+ .cse0 v_main_~x~0_2)) (= v_main_~y~0_2 (+ .cse0 v_main_~y~0_1))))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_1} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0] [2021-05-06 06:31:50,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:31:50 BasicIcfg [2021-05-06 06:31:50,365 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:31:50,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:31:50,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:31:50,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:31:50,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:31:49" (1/4) ... [2021-05-06 06:31:50,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7aa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:31:50, skipping insertion in model container [2021-05-06 06:31:50,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:49" (2/4) ... [2021-05-06 06:31:50,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7aa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:31:50, skipping insertion in model container [2021-05-06 06:31:50,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:50" (3/4) ... [2021-05-06 06:31:50,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7aa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:31:50, skipping insertion in model container [2021-05-06 06:31:50,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:31:50" (4/4) ... [2021-05-06 06:31:50,370 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_7.cJordan [2021-05-06 06:31:50,374 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:31:50,375 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:31:50,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:31:50,400 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:31:50,400 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:31:50,400 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:31:50,400 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:31:50,400 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:31:50,400 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:31:50,400 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:31:50,400 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:31:50,410 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 06:31:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:31:50,416 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:50,417 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:50,417 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-06 06:31:50,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:50,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519614417] [2021-05-06 06:31:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,579 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 06:31:50,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:50,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519614417] [2021-05-06 06:31:50,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519614417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:50,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:50,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:31:50,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581893017] [2021-05-06 06:31:50,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:31:50,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:50,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:31:50,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:31:50,595 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 06:31:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:50,627 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 06:31:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:31:50,629 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 06:31:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:50,633 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:31:50,633 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:31:50,634 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:31:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:31:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:31:50,654 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 06:31:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-06 06:31:50,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-06 06:31:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:50,655 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-06 06:31:50,662 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 06:31:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-06 06:31:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:31:50,663 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:50,663 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:50,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:31:50,663 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-06 06:31:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:50,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718482183] [2021-05-06 06:31:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,718 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 06:31:50,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:50,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718482183] [2021-05-06 06:31:50,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718482183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:50,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:50,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:50,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422775854] [2021-05-06 06:31:50,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:50,720 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 06:31:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:50,759 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-06 06:31:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:50,760 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 06:31:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:50,760 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:31:50,760 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:31:50,761 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:31:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 06:31:50,763 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 06:31:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 06:31:50,763 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-06 06:31:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:50,763 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 06:31:50,763 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 06:31:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 06:31:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:31:50,764 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:50,764 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:50,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:31:50,764 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-06 06:31:50,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:50,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290049221] [2021-05-06 06:31:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,804 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 06:31:50,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:50,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290049221] [2021-05-06 06:31:50,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290049221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:50,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:50,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:50,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619534189] [2021-05-06 06:31:50,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:50,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:50,806 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 06:31:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:50,855 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-06 06:31:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:50,855 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 06:31:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:50,856 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:31:50,856 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 06:31:50,856 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 06:31:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 06:31:50,857 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 06:31:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 06:31:50,858 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-06 06:31:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:50,858 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 06:31:50,858 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 06:31:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 06:31:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:31:50,859 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:50,859 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:50,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 06:31:50,859 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:50,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-06 06:31:50,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:50,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773726908] [2021-05-06 06:31:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,905 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 06:31:50,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:50,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773726908] [2021-05-06 06:31:50,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773726908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:50,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047619084] [2021-05-06 06:31:50,906 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 06:31:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:50,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:31:50,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:50,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,007 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 06:31:51,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047619084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:51,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:51,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-06 06:31:51,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410651705] [2021-05-06 06:31:51,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:31:51,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:31:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:31:51,012 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 06:31:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:51,083 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:31:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:31:51,084 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 06:31:51,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:51,084 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:31:51,084 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 06:31:51,085 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:31:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 06:31:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 06:31:51,087 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 06:31:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 06:31:51,087 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-06 06:31:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:51,088 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 06:31:51,088 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 06:31:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 06:31:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:31:51,088 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:51,088 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:51,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:51,298 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:51,298 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-06 06:31:51,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:51,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844077515] [2021-05-06 06:31:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,357 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 06:31:51,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:51,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844077515] [2021-05-06 06:31:51,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844077515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:51,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:51,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:51,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676177452] [2021-05-06 06:31:51,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:51,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:51,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:51,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:51,359 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 06:31:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:51,415 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-06 06:31:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:51,416 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 06:31:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:51,416 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:31:51,416 INFO L226 Difference]: Without dead ends: 21 [2021-05-06 06:31:51,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-06 06:31:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-06 06:31:51,421 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 06:31:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-06 06:31:51,421 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-06 06:31:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:51,421 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-06 06:31:51,422 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 06:31:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-06 06:31:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 06:31:51,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:51,422 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:51,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 06:31:51,422 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:51,423 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-06 06:31:51,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:51,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305931131] [2021-05-06 06:31:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,501 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 06:31:51,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:51,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305931131] [2021-05-06 06:31:51,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305931131] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:51,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176117642] [2021-05-06 06:31:51,501 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 06:31:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:31:51,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,620 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 06:31:51,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176117642] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:51,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:51,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-06 06:31:51,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480718855] [2021-05-06 06:31:51,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:31:51,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:31:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:31:51,623 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 06:31:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:51,723 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-06 06:31:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:31:51,723 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 06:31:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:51,725 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:31:51,725 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 06:31:51,726 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 06:31:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 06:31:51,728 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 06:31:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-06 06:31:51,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-06 06:31:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:51,730 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-06 06:31:51,730 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 06:31:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-06 06:31:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 06:31:51,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:51,731 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:51,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:51,937 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:51,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-06 06:31:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:51,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866467806] [2021-05-06 06:31:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:52,007 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 06:31:52,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:52,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866467806] [2021-05-06 06:31:52,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866467806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72381907] [2021-05-06 06:31:52,009 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 06:31:52,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:52,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:52,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:31:52,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,110 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 06:31:52,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72381907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:52,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 06:31:52,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107114915] [2021-05-06 06:31:52,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:31:52,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:31:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:31:52,114 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 06:31:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:52,246 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-06 06:31:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:31:52,246 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 06:31:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:52,247 INFO L225 Difference]: With dead ends: 24 [2021-05-06 06:31:52,247 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 06:31:52,247 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:31:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 06:31:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-06 06:31:52,249 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 06:31:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-06 06:31:52,249 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-06 06:31:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:52,249 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-06 06:31:52,249 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 06:31:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-06 06:31:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 06:31:52,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:52,250 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:52,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:52,470 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:52,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-06 06:31:52,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:52,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570928752] [2021-05-06 06:31:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:52,527 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 06:31:52,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:52,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570928752] [2021-05-06 06:31:52,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570928752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645984812] [2021-05-06 06:31:52,527 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 06:31:52,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 06:31:52,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:52,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:31:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:52,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,646 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 06:31:52,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645984812] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:52,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-06 06:31:52,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847294655] [2021-05-06 06:31:52,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:31:52,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:52,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:31:52,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:52,648 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 06:31:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:52,859 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-06 06:31:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:31:52,859 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 06:31:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:52,861 INFO L225 Difference]: With dead ends: 29 [2021-05-06 06:31:52,862 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 06:31:52,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 196.3ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-06 06:31:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 06:31:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-06 06:31:52,866 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 06:31:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-06 06:31:52,866 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-06 06:31:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:52,867 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-06 06:31:52,867 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 06:31:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-06 06:31:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 06:31:52,868 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:52,868 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:53,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:53,081 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-06 06:31:53,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:53,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32857713] [2021-05-06 06:31:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:53,150 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 06:31:53,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:53,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32857713] [2021-05-06 06:31:53,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32857713] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:53,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024683288] [2021-05-06 06:31:53,150 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 06:31:53,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:31:53,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:53,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:31:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:53,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,242 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 06:31:53,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024683288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:53,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:53,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-06 06:31:53,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608089703] [2021-05-06 06:31:53,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:31:53,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:31:53,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:53,244 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 06:31:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:53,421 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-06 06:31:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:31:53,421 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 06:31:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:53,421 INFO L225 Difference]: With dead ends: 30 [2021-05-06 06:31:53,422 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 06:31:53,422 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:31:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 06:31:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 06:31:53,427 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 06:31:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 06:31:53,430 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-06 06:31:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:53,431 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 06:31:53,432 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 06:31:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 06:31:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 06:31:53,432 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:53,432 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:53,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:53,645 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-06 06:31:53,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:53,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414218628] [2021-05-06 06:31:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:53,717 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 06:31:53,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:53,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414218628] [2021-05-06 06:31:53,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414218628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:53,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658945123] [2021-05-06 06:31:53,719 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 06:31:53,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-06 06:31:53,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:53,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:31:53,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:53,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:53,834 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 06:31:53,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658945123] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:53,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:53,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-06 06:31:53,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573307669] [2021-05-06 06:31:53,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 06:31:53,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 06:31:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:31:53,836 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 06:31:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:54,041 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-06 06:31:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:31:54,053 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 06:31:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:54,053 INFO L225 Difference]: With dead ends: 32 [2021-05-06 06:31:54,054 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 06:31:54,054 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:31:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 06:31:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 06:31:54,055 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 06:31:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-06 06:31:54,056 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-06 06:31:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:54,056 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-06 06:31:54,056 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 06:31:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-06 06:31:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-06 06:31:54,057 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:54,057 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:54,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:54,273 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-06 06:31:54,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:54,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168296830] [2021-05-06 06:31:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:54,341 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 06:31:54,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:54,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168296830] [2021-05-06 06:31:54,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168296830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:54,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999870204] [2021-05-06 06:31:54,342 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 06:31:54,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-06 06:31:54,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:31:54,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:54,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,495 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 06:31:54,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999870204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:54,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:54,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-06 06:31:54,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312473677] [2021-05-06 06:31:54,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 06:31:54,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:54,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 06:31:54,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 06:31:54,496 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 06:31:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:54,746 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 06:31:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 06:31:54,746 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 06:31:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:54,747 INFO L225 Difference]: With dead ends: 38 [2021-05-06 06:31:54,747 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 06:31:54,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 251.7ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:31:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 06:31:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 06:31:54,749 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 06:31:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 06:31:54,749 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-06 06:31:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:54,749 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 06:31:54,750 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 06:31:54,750 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 06:31:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 06:31:54,750 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:54,750 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:54,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:54,953 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-06 06:31:54,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:54,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948368325] [2021-05-06 06:31:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,057 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 06:31:55,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:55,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948368325] [2021-05-06 06:31:55,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948368325] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786987384] [2021-05-06 06:31:55,057 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 06:31:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:31:55,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,193 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 06:31:55,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786987384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:55,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-06 06:31:55,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338415062] [2021-05-06 06:31:55,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 06:31:55,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 06:31:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:31:55,195 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 06:31:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:55,512 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-06 06:31:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 06:31:55,512 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 06:31:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:55,512 INFO L225 Difference]: With dead ends: 40 [2021-05-06 06:31:55,512 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 06:31:55,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 292.6ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-06 06:31:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 06:31:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-06 06:31:55,514 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 06:31:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-06 06:31:55,515 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-06 06:31:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:55,515 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-06 06:31:55,515 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 06:31:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-06 06:31:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:31:55,516 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:55,516 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:55,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 06:31:55,721 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-06 06:31:55,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:55,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288198450] [2021-05-06 06:31:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,824 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 06:31:55,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:55,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288198450] [2021-05-06 06:31:55,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288198450] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489383941] [2021-05-06 06:31:55,824 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 06:31:55,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:55,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:55,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:31:55,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,995 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 06:31:55,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489383941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:55,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-06 06:31:55,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538518611] [2021-05-06 06:31:55,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 06:31:55,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:55,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 06:31:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:31:55,997 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 06:31:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:56,361 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-06 06:31:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 06:31:56,361 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 06:31:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:56,362 INFO L225 Difference]: With dead ends: 42 [2021-05-06 06:31:56,362 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 06:31:56,362 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 341.3ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:31:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 06:31:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-06 06:31:56,364 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 06:31:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-06 06:31:56,364 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-06 06:31:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:56,364 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-06 06:31:56,364 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 06:31:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-06 06:31:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 06:31:56,365 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:56,365 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:56,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:56,575 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-06 06:31:56,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:56,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386384034] [2021-05-06 06:31:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:56,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:56,723 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 06:31:56,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:56,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386384034] [2021-05-06 06:31:56,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386384034] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:56,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850002750] [2021-05-06 06:31:56,723 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 06:31:56,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-06 06:31:56,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:56,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:31:56,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:56,870 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 06:31:56,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850002750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:56,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:56,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-06 06:31:56,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210990156] [2021-05-06 06:31:56,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:31:56,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:31:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:31:56,875 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 06:31:57,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:57,326 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-06 06:31:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 06:31:57,327 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 06:31:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:57,327 INFO L225 Difference]: With dead ends: 47 [2021-05-06 06:31:57,327 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 06:31:57,328 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 467.8ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:31:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 06:31:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-06 06:31:57,329 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 06:31:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-06 06:31:57,330 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-06 06:31:57,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:57,330 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-06 06:31:57,330 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 06:31:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-06 06:31:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 06:31:57,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:57,331 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:57,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:57,545 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-06 06:31:57,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:57,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045607960] [2021-05-06 06:31:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:57,694 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 06:31:57,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:57,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045607960] [2021-05-06 06:31:57,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045607960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:57,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101464357] [2021-05-06 06:31:57,694 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 06:31:57,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:31:57,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:57,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:31:57,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:57,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,824 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 06:31:57,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101464357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:57,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:57,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-06 06:31:57,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111189999] [2021-05-06 06:31:57,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 06:31:57,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 06:31:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:31:57,825 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 06:31:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:58,243 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-06 06:31:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 06:31:58,244 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 06:31:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:58,244 INFO L225 Difference]: With dead ends: 48 [2021-05-06 06:31:58,244 INFO L226 Difference]: Without dead ends: 48 [2021-05-06 06:31:58,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 429.2ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-06 06:31:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-06 06:31:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-06 06:31:58,248 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 06:31:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-06 06:31:58,248 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-06 06:31:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:58,249 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-06 06:31:58,249 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 06:31:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-06 06:31:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 06:31:58,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:58,249 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:58,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 06:31:58,465 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:58,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-06 06:31:58,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:58,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71107060] [2021-05-06 06:31:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:58,646 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 06:31:58,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:58,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71107060] [2021-05-06 06:31:58,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71107060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:58,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143025254] [2021-05-06 06:31:58,646 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 06:31:58,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 06:31:58,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:58,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:31:58,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:58,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,780 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 06:31:58,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143025254] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:58,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:58,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-06 06:31:58,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719239560] [2021-05-06 06:31:58,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:31:58,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:31:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:31:58,781 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 06:31:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:59,261 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-06 06:31:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 06:31:59,261 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 06:31:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:59,262 INFO L225 Difference]: With dead ends: 50 [2021-05-06 06:31:59,262 INFO L226 Difference]: Without dead ends: 50 [2021-05-06 06:31:59,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 489.1ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:31:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-06 06:31:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-06 06:31:59,264 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 06:31:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-06 06:31:59,264 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-06 06:31:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:59,264 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-06 06:31:59,264 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 06:31:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-06 06:31:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-06 06:31:59,265 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:59,265 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:59,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 06:31:59,469 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:59,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-06 06:31:59,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:59,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244453102] [2021-05-06 06:31:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:59,609 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 06:31:59,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:59,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244453102] [2021-05-06 06:31:59,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244453102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:59,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508985738] [2021-05-06 06:31:59,609 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 06:31:59,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-06 06:31:59,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:59,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 06:31:59,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,797 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 06:31:59,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508985738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:59,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:59,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-06 06:31:59,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567042233] [2021-05-06 06:31:59,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 06:31:59,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:59,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 06:31:59,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 06:31:59,799 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 06:32:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:00,382 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-06 06:32:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:32:00,382 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 06:32:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:00,382 INFO L225 Difference]: With dead ends: 55 [2021-05-06 06:32:00,382 INFO L226 Difference]: Without dead ends: 55 [2021-05-06 06:32:00,383 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 662.9ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:32:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-06 06:32:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-06 06:32:00,385 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 06:32:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-06 06:32:00,385 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-06 06:32:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:00,385 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-06 06:32:00,385 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 06:32:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-06 06:32:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 06:32:00,387 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:00,387 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:00,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 06:32:00,596 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-06 06:32:00,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:00,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918180764] [2021-05-06 06:32:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:00,793 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 06:32:00,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:00,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918180764] [2021-05-06 06:32:00,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918180764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:00,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683409768] [2021-05-06 06:32:00,793 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 06:32:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:00,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:32:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:00,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,939 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 06:32:00,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683409768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:00,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:00,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-06 06:32:00,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626423808] [2021-05-06 06:32:00,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 06:32:00,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 06:32:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 06:32:00,941 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 06:32:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:01,457 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 06:32:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 06:32:01,457 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 06:32:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:01,458 INFO L225 Difference]: With dead ends: 56 [2021-05-06 06:32:01,458 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 06:32:01,458 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 548.3ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 06:32:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 06:32:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 06:32:01,460 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 06:32:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 06:32:01,460 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-06 06:32:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:01,460 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 06:32:01,460 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 06:32:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 06:32:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-06 06:32:01,461 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:01,461 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:01,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:01,669 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-06 06:32:01,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:01,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762267362] [2021-05-06 06:32:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:01,831 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 06:32:01,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:01,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762267362] [2021-05-06 06:32:01,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762267362] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:01,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123227387] [2021-05-06 06:32:01,831 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 06:32:01,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:01,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:01,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:32:01,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:01,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:01,971 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 06:32:01,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123227387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:01,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:01,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-06 06:32:01,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973709158] [2021-05-06 06:32:01,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 06:32:01,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:01,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 06:32:01,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 06:32:01,973 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 06:32:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:02,487 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-06 06:32:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 06:32:02,487 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 06:32:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:02,488 INFO L225 Difference]: With dead ends: 58 [2021-05-06 06:32:02,488 INFO L226 Difference]: Without dead ends: 58 [2021-05-06 06:32:02,488 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 552.8ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:32:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-06 06:32:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-06 06:32:02,490 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 06:32:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-06 06:32:02,490 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-06 06:32:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:02,490 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-06 06:32:02,490 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 06:32:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-06 06:32:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-06 06:32:02,491 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:02,491 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:02,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:02,705 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-06 06:32:02,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:02,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226563982] [2021-05-06 06:32:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:02,902 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 06:32:02,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:02,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226563982] [2021-05-06 06:32:02,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226563982] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:02,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568658933] [2021-05-06 06:32:02,902 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 06:32:02,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 06:32:02,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:32:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:02,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:03,107 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 06:32:03,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568658933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:03,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:03,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-06 06:32:03,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660680448] [2021-05-06 06:32:03,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:32:03,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:03,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:32:03,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:32:03,109 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 06:32:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:03,940 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-06 06:32:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:32:03,940 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 06:32:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:03,940 INFO L225 Difference]: With dead ends: 63 [2021-05-06 06:32:03,941 INFO L226 Difference]: Without dead ends: 63 [2021-05-06 06:32:03,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 905.9ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:32:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-06 06:32:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-06 06:32:03,944 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 06:32:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-06 06:32:03,944 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-06 06:32:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:03,944 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-06 06:32:03,945 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 06:32:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-06 06:32:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 06:32:03,945 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:03,945 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:04,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:04,146 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-06 06:32:04,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:04,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536220774] [2021-05-06 06:32:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:04,387 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 06:32:04,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:04,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536220774] [2021-05-06 06:32:04,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536220774] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:04,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993836262] [2021-05-06 06:32:04,388 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 06:32:04,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:04,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:04,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:32:04,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:04,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,588 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 06:32:04,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993836262] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:04,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:04,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-06 06:32:04,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022146662] [2021-05-06 06:32:04,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 06:32:04,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:04,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 06:32:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:32:04,589 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 06:32:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:05,221 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-06 06:32:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:32:05,222 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 06:32:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:05,222 INFO L225 Difference]: With dead ends: 64 [2021-05-06 06:32:05,222 INFO L226 Difference]: Without dead ends: 64 [2021-05-06 06:32:05,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 722.2ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 06:32:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-06 06:32:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-06 06:32:05,224 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 06:32:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-06 06:32:05,225 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-06 06:32:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:05,225 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-06 06:32:05,225 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 06:32:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-06 06:32:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 06:32:05,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:05,226 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:05,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 06:32:05,441 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-06 06:32:05,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:05,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088348408] [2021-05-06 06:32:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:05,717 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 06:32:05,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:05,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088348408] [2021-05-06 06:32:05,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088348408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:05,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931871960] [2021-05-06 06:32:05,717 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 06:32:05,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-06 06:32:05,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:05,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:32:05,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:05,858 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 06:32:05,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931871960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:05,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:05,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-06 06:32:05,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394576280] [2021-05-06 06:32:05,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 06:32:05,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 06:32:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 06:32:05,859 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 06:32:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:06,471 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-06 06:32:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 06:32:06,471 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 06:32:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:06,471 INFO L225 Difference]: With dead ends: 66 [2021-05-06 06:32:06,471 INFO L226 Difference]: Without dead ends: 66 [2021-05-06 06:32:06,472 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 732.9ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:32:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-06 06:32:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-06 06:32:06,473 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 06:32:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-06 06:32:06,474 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-06 06:32:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:06,474 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-06 06:32:06,474 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 06:32:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-06 06:32:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-06 06:32:06,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:06,474 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:06,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 06:32:06,677 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-06 06:32:06,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:06,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606812665] [2021-05-06 06:32:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:06,938 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 06:32:06,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:06,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606812665] [2021-05-06 06:32:06,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606812665] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:06,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769638245] [2021-05-06 06:32:06,938 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 06:32:07,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-06 06:32:07,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:07,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:32:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:07,248 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 06:32:07,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769638245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:07,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:07,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-06 06:32:07,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608358709] [2021-05-06 06:32:07,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:32:07,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:07,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:32:07,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:32:07,250 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 06:32:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:08,217 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-06 06:32:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 06:32:08,217 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 06:32:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:08,218 INFO L225 Difference]: With dead ends: 71 [2021-05-06 06:32:08,218 INFO L226 Difference]: Without dead ends: 71 [2021-05-06 06:32:08,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1172.9ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:32:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-06 06:32:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-06 06:32:08,221 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 06:32:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-06 06:32:08,221 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-06 06:32:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:08,221 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-06 06:32:08,222 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 06:32:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-06 06:32:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 06:32:08,222 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:08,222 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:08,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-06 06:32:08,436 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:08,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:08,436 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-06 06:32:08,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:08,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33719121] [2021-05-06 06:32:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,705 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 06:32:08,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:08,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33719121] [2021-05-06 06:32:08,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33719121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:08,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649224401] [2021-05-06 06:32:08,705 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 06:32:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:32:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,888 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 06:32:08,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649224401] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:08,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:08,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-06 06:32:08,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059389505] [2021-05-06 06:32:08,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:32:08,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:08,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:32:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:32:08,890 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 06:32:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:09,572 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-06 06:32:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 06:32:09,573 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 06:32:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:09,573 INFO L225 Difference]: With dead ends: 72 [2021-05-06 06:32:09,573 INFO L226 Difference]: Without dead ends: 72 [2021-05-06 06:32:09,574 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 790.0ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 06:32:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-06 06:32:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-06 06:32:09,575 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 06:32:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-06 06:32:09,575 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-06 06:32:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:09,575 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-06 06:32:09,575 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 06:32:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-06 06:32:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-06 06:32:09,576 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:09,576 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:09,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 06:32:09,785 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-06 06:32:09,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:09,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299285134] [2021-05-06 06:32:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:10,044 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 06:32:10,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:10,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299285134] [2021-05-06 06:32:10,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299285134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:10,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855346355] [2021-05-06 06:32:10,044 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 06:32:10,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:10,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:10,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:32:10,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:10,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,196 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 06:32:10,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855346355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:10,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:10,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-06 06:32:10,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877997877] [2021-05-06 06:32:10,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 06:32:10,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 06:32:10,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:32:10,197 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 06:32:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:10,966 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 06:32:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:32:10,966 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 06:32:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:10,967 INFO L225 Difference]: With dead ends: 74 [2021-05-06 06:32:10,967 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 06:32:10,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 844.1ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:32:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 06:32:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 06:32:10,968 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 06:32:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 06:32:10,969 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-06 06:32:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:10,969 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 06:32:10,969 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 06:32:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 06:32:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-06 06:32:10,969 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:10,969 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:11,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-06 06:32:11,170 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:11,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-06 06:32:11,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:11,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721159593] [2021-05-06 06:32:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:11,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:11,505 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 06:32:11,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:11,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721159593] [2021-05-06 06:32:11,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721159593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:11,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215018230] [2021-05-06 06:32:11,506 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 06:32:11,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-06 06:32:11,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:11,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:32:11,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:11,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:11,792 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 06:32:11,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215018230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:11,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:11,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-06 06:32:11,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142279805] [2021-05-06 06:32:11,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 06:32:11,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:11,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 06:32:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:32:11,794 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 06:32:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:12,837 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-06 06:32:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:32:12,838 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 06:32:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:12,838 INFO L225 Difference]: With dead ends: 79 [2021-05-06 06:32:12,838 INFO L226 Difference]: Without dead ends: 79 [2021-05-06 06:32:12,839 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1355.6ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:32:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-06 06:32:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-06 06:32:12,840 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 06:32:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-06 06:32:12,840 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-06 06:32:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:12,841 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-06 06:32:12,841 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 06:32:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-06 06:32:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 06:32:12,841 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:12,841 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:13,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:13,057 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:13,057 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-06 06:32:13,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:13,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597193072] [2021-05-06 06:32:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:13,351 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 06:32:13,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:13,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597193072] [2021-05-06 06:32:13,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597193072] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:13,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883732489] [2021-05-06 06:32:13,352 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 06:32:13,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:13,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:13,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:32:13,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:13,540 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 06:32:13,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883732489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:13,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:13,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-06 06:32:13,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876043307] [2021-05-06 06:32:13,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 06:32:13,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 06:32:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 06:32:13,542 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 06:32:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:14,352 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-06 06:32:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 06:32:14,352 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 06:32:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:14,353 INFO L225 Difference]: With dead ends: 80 [2021-05-06 06:32:14,353 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 06:32:14,353 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 939.5ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 06:32:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 06:32:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-06 06:32:14,355 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 06:32:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-06 06:32:14,355 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-06 06:32:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:14,355 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-06 06:32:14,355 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 06:32:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-06 06:32:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-06 06:32:14,355 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:14,356 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:14,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 06:32:14,556 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:14,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-06 06:32:14,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:14,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395025118] [2021-05-06 06:32:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:14,889 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 06:32:14,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:14,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395025118] [2021-05-06 06:32:14,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395025118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:14,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776807168] [2021-05-06 06:32:14,889 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 06:32:14,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-06 06:32:14,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:14,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:32:14,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:14,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:14,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,081 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 06:32:15,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776807168] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:15,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:15,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-06 06:32:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404675782] [2021-05-06 06:32:15,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:32:15,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:32:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:32:15,082 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 06:32:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:15,958 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-06 06:32:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 06:32:15,958 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 06:32:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:15,959 INFO L225 Difference]: With dead ends: 82 [2021-05-06 06:32:15,959 INFO L226 Difference]: Without dead ends: 82 [2021-05-06 06:32:15,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 999.8ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:32:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-06 06:32:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-06 06:32:15,961 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 06:32:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-06 06:32:15,961 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-06 06:32:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:15,961 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-06 06:32:15,961 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 06:32:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-06 06:32:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 06:32:15,961 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:15,962 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:16,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:16,165 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-06 06:32:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:16,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436510202] [2021-05-06 06:32:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:16,510 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 06:32:16,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:16,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436510202] [2021-05-06 06:32:16,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436510202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:16,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161008739] [2021-05-06 06:32:16,510 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 06:32:16,573 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 06:32:16,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:16,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:32:16,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:16,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:16,867 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 06:32:16,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161008739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:16,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:16,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-06 06:32:16,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060134817] [2021-05-06 06:32:16,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:32:16,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:16,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:32:16,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:32:16,869 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 06:32:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:18,175 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-06 06:32:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:32:18,175 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 06:32:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:18,176 INFO L225 Difference]: With dead ends: 87 [2021-05-06 06:32:18,176 INFO L226 Difference]: Without dead ends: 87 [2021-05-06 06:32:18,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1634.6ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:32:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-06 06:32:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-06 06:32:18,178 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 06:32:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-06 06:32:18,178 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-06 06:32:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:18,178 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-06 06:32:18,178 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 06:32:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-06 06:32:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 06:32:18,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:18,179 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:18,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 06:32:18,379 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-06 06:32:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:18,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979144680] [2021-05-06 06:32:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:18,756 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 06:32:18,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:18,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979144680] [2021-05-06 06:32:18,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979144680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:18,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203668003] [2021-05-06 06:32:18,757 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 06:32:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:18,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:32:18,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:18,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:18,947 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 06:32:18,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203668003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:18,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:18,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-06 06:32:18,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129473670] [2021-05-06 06:32:18,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 06:32:18,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 06:32:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 06:32:18,949 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 06:32:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:19,883 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-06 06:32:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 06:32:19,884 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 06:32:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:19,884 INFO L225 Difference]: With dead ends: 88 [2021-05-06 06:32:19,884 INFO L226 Difference]: Without dead ends: 88 [2021-05-06 06:32:19,885 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1119.4ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 06:32:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-06 06:32:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-06 06:32:19,886 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 06:32:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-06 06:32:19,887 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-06 06:32:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:19,887 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-06 06:32:19,887 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 06:32:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-06 06:32:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-06 06:32:19,887 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:19,887 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:20,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:20,096 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:20,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-06 06:32:20,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:20,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603354177] [2021-05-06 06:32:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:20,509 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 06:32:20,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:20,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603354177] [2021-05-06 06:32:20,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603354177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:20,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981512656] [2021-05-06 06:32:20,510 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 06:32:20,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:20,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:32:20,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:20,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,702 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 06:32:20,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981512656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:20,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:20,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-06 06:32:20,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150689741] [2021-05-06 06:32:20,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 06:32:20,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 06:32:20,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:32:20,704 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 06:32:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:21,719 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-06 06:32:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 06:32:21,719 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 06:32:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:21,720 INFO L225 Difference]: With dead ends: 90 [2021-05-06 06:32:21,720 INFO L226 Difference]: Without dead ends: 90 [2021-05-06 06:32:21,720 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1199.7ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:32:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-06 06:32:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-06 06:32:21,722 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 06:32:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-06 06:32:21,722 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-06 06:32:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:21,722 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-06 06:32:21,722 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 06:32:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-06 06:32:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-06 06:32:21,723 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:21,723 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:21,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-06 06:32:21,937 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-06 06:32:21,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:21,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503591217] [2021-05-06 06:32:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:22,308 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 06:32:22,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:22,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503591217] [2021-05-06 06:32:22,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503591217] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:22,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262573025] [2021-05-06 06:32:22,309 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 06:32:22,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-06 06:32:22,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:32:22,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,706 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 06:32:22,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262573025] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:22,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:22,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-06 06:32:22,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664586183] [2021-05-06 06:32:22,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:32:22,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:32:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:32:22,707 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 06:32:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:24,175 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-06 06:32:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 06:32:24,175 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 06:32:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:24,176 INFO L225 Difference]: With dead ends: 95 [2021-05-06 06:32:24,176 INFO L226 Difference]: Without dead ends: 95 [2021-05-06 06:32:24,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1871.3ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:32:24,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-06 06:32:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-06 06:32:24,178 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 06:32:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-06 06:32:24,178 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-06 06:32:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:24,178 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-06 06:32:24,178 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 06:32:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-06 06:32:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 06:32:24,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:24,179 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:24,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:24,393 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:24,393 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-06 06:32:24,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:24,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763229612] [2021-05-06 06:32:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:24,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:24,831 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 06:32:24,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:24,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763229612] [2021-05-06 06:32:24,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763229612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:24,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000834755] [2021-05-06 06:32:24,832 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 06:32:24,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:24,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:24,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:32:24,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:24,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:24,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,015 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 06:32:25,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000834755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:25,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:25,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-06 06:32:25,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238643322] [2021-05-06 06:32:25,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 06:32:25,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 06:32:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 06:32:25,016 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 06:32:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:26,049 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-06 06:32:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:32:26,049 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 06:32:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:26,050 INFO L225 Difference]: With dead ends: 96 [2021-05-06 06:32:26,050 INFO L226 Difference]: Without dead ends: 96 [2021-05-06 06:32:26,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1337.0ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 06:32:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-06 06:32:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-06 06:32:26,051 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 06:32:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-06 06:32:26,052 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-06 06:32:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:26,052 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-06 06:32:26,052 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 06:32:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-06 06:32:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 06:32:26,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:26,053 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:26,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 06:32:26,262 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:26,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-06 06:32:26,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:26,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065649128] [2021-05-06 06:32:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:26,701 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 06:32:26,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:26,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065649128] [2021-05-06 06:32:26,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065649128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:26,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578029793] [2021-05-06 06:32:26,701 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 06:32:26,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 06:32:26,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:26,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:32:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:26,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,807 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 06:32:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:26,907 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 06:32:26,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578029793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:26,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:26,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-06 06:32:26,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400025266] [2021-05-06 06:32:26,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 06:32:26,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 06:32:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 06:32:26,908 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 06:32:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:28,071 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-06 06:32:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 06:32:28,071 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 06:32:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:28,072 INFO L225 Difference]: With dead ends: 98 [2021-05-06 06:32:28,072 INFO L226 Difference]: Without dead ends: 98 [2021-05-06 06:32:28,072 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1391.6ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:32:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-06 06:32:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-06 06:32:28,074 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 06:32:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-06 06:32:28,074 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-06 06:32:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:28,074 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-06 06:32:28,074 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 06:32:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-06 06:32:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-06 06:32:28,075 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:28,075 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:28,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:28,285 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-06 06:32:28,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:28,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477253035] [2021-05-06 06:32:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:28,737 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 06:32:28,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:28,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477253035] [2021-05-06 06:32:28,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477253035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:28,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274690094] [2021-05-06 06:32:28,738 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 06:32:28,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-06 06:32:28,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:28,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:32:28,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:29,213 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 06:32:29,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274690094] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:29,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:29,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-06 06:32:29,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982520] [2021-05-06 06:32:29,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 06:32:29,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:29,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 06:32:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 06:32:29,214 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 06:32:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:30,927 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-06 06:32:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:32:30,928 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 06:32:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:30,928 INFO L225 Difference]: With dead ends: 103 [2021-05-06 06:32:30,928 INFO L226 Difference]: Without dead ends: 103 [2021-05-06 06:32:30,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2205.9ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:32:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-06 06:32:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-06 06:32:30,930 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 06:32:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-06 06:32:30,930 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-06 06:32:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:30,930 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-06 06:32:30,930 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 06:32:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-06 06:32:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 06:32:30,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:30,931 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:31,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 06:32:31,137 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-06 06:32:31,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:31,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114965463] [2021-05-06 06:32:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:31,637 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 06:32:31,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:31,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114965463] [2021-05-06 06:32:31,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114965463] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:31,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732687912] [2021-05-06 06:32:31,638 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 06:32:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:31,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:32:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,848 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 06:32:31,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732687912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:31,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:31,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-06 06:32:31,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925794121] [2021-05-06 06:32:31,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:32:31,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:32:31,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:32:31,849 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 06:32:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:33,015 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-06 06:32:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 06:32:33,015 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 06:32:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:33,016 INFO L225 Difference]: With dead ends: 104 [2021-05-06 06:32:33,016 INFO L226 Difference]: Without dead ends: 104 [2021-05-06 06:32:33,019 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1517.7ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 06:32:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-06 06:32:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-06 06:32:33,020 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 06:32:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-06 06:32:33,021 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-06 06:32:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:33,021 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-06 06:32:33,021 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 06:32:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-06 06:32:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-06 06:32:33,021 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:33,021 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:33,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-06 06:32:33,237 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-06 06:32:33,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:33,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821991694] [2021-05-06 06:32:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:33,752 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 06:32:33,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:33,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821991694] [2021-05-06 06:32:33,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821991694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:33,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322519833] [2021-05-06 06:32:33,753 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 06:32:33,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:33,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:33,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:32:33,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:33,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,986 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 06:32:33,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322519833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:33,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:33,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-06 06:32:33,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884967387] [2021-05-06 06:32:33,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 06:32:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 06:32:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:32:33,988 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 06:32:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:35,273 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-06 06:32:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:32:35,274 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 06:32:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:35,274 INFO L225 Difference]: With dead ends: 106 [2021-05-06 06:32:35,274 INFO L226 Difference]: Without dead ends: 106 [2021-05-06 06:32:35,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1573.3ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:32:35,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-06 06:32:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-06 06:32:35,276 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 06:32:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-06 06:32:35,276 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-06 06:32:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:35,276 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-06 06:32:35,277 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 06:32:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-06 06:32:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 06:32:35,277 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:35,277 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:35,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 06:32:35,489 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:35,489 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-06 06:32:35,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:35,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931891264] [2021-05-06 06:32:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:36,026 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 06:32:36,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:36,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931891264] [2021-05-06 06:32:36,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931891264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:36,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362741857] [2021-05-06 06:32:36,026 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 06:32:36,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 06:32:36,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:36,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:32:36,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,552 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 06:32:36,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362741857] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:36,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:36,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-06 06:32:36,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587145490] [2021-05-06 06:32:36,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:32:36,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:36,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:32:36,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:32:36,553 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 06:32:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:38,556 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-06 06:32:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:32:38,556 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 06:32:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:38,557 INFO L225 Difference]: With dead ends: 111 [2021-05-06 06:32:38,557 INFO L226 Difference]: Without dead ends: 111 [2021-05-06 06:32:38,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2608.3ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:32:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-06 06:32:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-06 06:32:38,558 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 06:32:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-06 06:32:38,559 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-06 06:32:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:38,559 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-06 06:32:38,559 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 06:32:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-06 06:32:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 06:32:38,559 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:38,560 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:38,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 06:32:38,769 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:38,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-06 06:32:38,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:38,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69798387] [2021-05-06 06:32:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:39,311 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 06:32:39,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:39,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69798387] [2021-05-06 06:32:39,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69798387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:39,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838773340] [2021-05-06 06:32:39,312 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 06:32:39,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:39,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:39,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:32:39,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:39,533 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 06:32:39,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838773340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:39,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:39,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-06 06:32:39,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829362688] [2021-05-06 06:32:39,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 06:32:39,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 06:32:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 06:32:39,534 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 06:32:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:40,931 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-06 06:32:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 06:32:40,931 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 06:32:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:40,932 INFO L225 Difference]: With dead ends: 112 [2021-05-06 06:32:40,932 INFO L226 Difference]: Without dead ends: 112 [2021-05-06 06:32:40,932 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1705.1ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 06:32:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-06 06:32:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-06 06:32:40,933 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 06:32:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-06 06:32:40,934 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-06 06:32:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:40,934 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-06 06:32:40,934 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 06:32:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-06 06:32:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 06:32:40,934 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:40,934 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:41,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 06:32:41,145 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-06 06:32:41,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:41,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274968650] [2021-05-06 06:32:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:41,728 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 06:32:41,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:41,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274968650] [2021-05-06 06:32:41,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274968650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:41,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911774160] [2021-05-06 06:32:41,729 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 06:32:41,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-06 06:32:41,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:41,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:32:41,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:41,972 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 06:32:41,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911774160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:41,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:41,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-06 06:32:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435971966] [2021-05-06 06:32:41,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:32:41,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:41,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:32:41,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:32:41,973 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 06:32:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:43,491 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-06 06:32:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 06:32:43,492 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 06:32:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:43,492 INFO L225 Difference]: With dead ends: 114 [2021-05-06 06:32:43,492 INFO L226 Difference]: Without dead ends: 114 [2021-05-06 06:32:43,493 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1932.2ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:32:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-06 06:32:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-06 06:32:43,494 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 06:32:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-06 06:32:43,494 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-06 06:32:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:43,494 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-06 06:32:43,494 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 06:32:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-06 06:32:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 06:32:43,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:43,495 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:43,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 06:32:43,709 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-06 06:32:43,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:43,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561223349] [2021-05-06 06:32:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:44,405 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 06:32:44,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:44,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561223349] [2021-05-06 06:32:44,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561223349] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:44,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360042139] [2021-05-06 06:32:44,406 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 06:32:44,509 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-06 06:32:44,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:44,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 06:32:44,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:44,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:44,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:45,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:45,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:45,072 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 06:32:45,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360042139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:45,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:45,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-06 06:32:45,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428972372] [2021-05-06 06:32:45,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:32:45,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:32:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:32:45,073 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 06:32:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:47,267 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-06 06:32:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 06:32:47,268 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 06:32:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:47,268 INFO L225 Difference]: With dead ends: 119 [2021-05-06 06:32:47,268 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 06:32:47,269 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3041.2ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:32:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 06:32:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-06 06:32:47,270 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 06:32:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-06 06:32:47,270 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-06 06:32:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:47,271 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-06 06:32:47,271 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 06:32:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-06 06:32:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 06:32:47,271 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:47,271 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:47,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-06 06:32:47,484 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:47,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-06 06:32:47,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:47,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751445467] [2021-05-06 06:32:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:48,141 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 06:32:48,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:48,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751445467] [2021-05-06 06:32:48,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751445467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:48,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805858807] [2021-05-06 06:32:48,141 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 06:32:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:48,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-06 06:32:48,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:48,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:48,372 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 06:32:48,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805858807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:48,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:48,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-06 06:32:48,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851834499] [2021-05-06 06:32:48,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 06:32:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 06:32:48,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 06:32:48,373 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 06:32:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:49,897 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-06 06:32:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 06:32:49,898 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 06:32:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:49,898 INFO L225 Difference]: With dead ends: 120 [2021-05-06 06:32:49,898 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 06:32:49,899 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1960.3ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 06:32:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 06:32:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-06 06:32:49,900 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 06:32:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-06 06:32:49,901 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-06 06:32:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:49,901 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-06 06:32:49,901 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 06:32:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-06 06:32:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-06 06:32:49,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:49,902 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:50,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:50,119 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-06 06:32:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:50,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764413412] [2021-05-06 06:32:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:50,840 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 06:32:50,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:50,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764413412] [2021-05-06 06:32:50,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764413412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:50,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791081080] [2021-05-06 06:32:50,840 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 06:32:50,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:50,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:50,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 06:32:50,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:51,080 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 06:32:51,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791081080] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:51,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:51,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-06 06:32:51,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754505699] [2021-05-06 06:32:51,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 06:32:51,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:51,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 06:32:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:32:51,081 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 06:32:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:52,689 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-06 06:32:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 06:32:52,690 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 06:32:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:52,690 INFO L225 Difference]: With dead ends: 122 [2021-05-06 06:32:52,690 INFO L226 Difference]: Without dead ends: 122 [2021-05-06 06:32:52,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2063.6ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:32:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-06 06:32:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-06 06:32:52,692 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 06:32:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-06 06:32:52,693 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-06 06:32:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:52,693 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-06 06:32:52,693 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 06:32:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-06 06:32:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-06 06:32:52,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:52,693 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:52,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:52,909 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:52,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-06 06:32:52,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:52,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111848573] [2021-05-06 06:32:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:53,646 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 06:32:53,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:53,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111848573] [2021-05-06 06:32:53,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111848573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:53,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710907559] [2021-05-06 06:32:53,646 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 06:32:53,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-06 06:32:53,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:53,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:32:53,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:53,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:54,309 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 06:32:54,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710907559] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:54,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:54,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-06 06:32:54,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2341194] [2021-05-06 06:32:54,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 06:32:54,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 06:32:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:32:54,311 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 06:32:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:56,770 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-06 06:32:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:32:56,770 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 06:32:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:56,771 INFO L225 Difference]: With dead ends: 127 [2021-05-06 06:32:56,771 INFO L226 Difference]: Without dead ends: 127 [2021-05-06 06:32:56,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3354.4ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:32:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-06 06:32:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-06 06:32:56,773 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 06:32:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-06 06:32:56,773 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-06 06:32:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:56,773 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-06 06:32:56,773 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 06:32:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-06 06:32:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 06:32:56,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:56,774 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:56,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:56,981 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-06 06:32:56,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:56,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864999632] [2021-05-06 06:32:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:57,746 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 06:32:57,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:57,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864999632] [2021-05-06 06:32:57,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864999632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:57,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894801601] [2021-05-06 06:32:57,746 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 06:32:57,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:57,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:57,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 06:32:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:57,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,995 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 06:32:57,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894801601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:57,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:57,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-06 06:32:57,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227268019] [2021-05-06 06:32:57,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 06:32:57,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 06:32:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 06:32:57,996 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 06:32:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:59,678 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-06 06:32:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:32:59,678 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 06:32:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:59,679 INFO L225 Difference]: With dead ends: 128 [2021-05-06 06:32:59,679 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 06:32:59,679 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2199.2ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 06:32:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 06:32:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 06:32:59,680 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 06:32:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-06 06:32:59,681 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-06 06:32:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:59,681 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-06 06:32:59,681 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 06:32:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-06 06:32:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-06 06:32:59,682 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:59,682 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:59,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-06 06:32:59,889 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:59,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:59,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-06 06:32:59,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:59,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159426403] [2021-05-06 06:32:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:00,629 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 06:33:00,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:00,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159426403] [2021-05-06 06:33:00,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159426403] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:00,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130364481] [2021-05-06 06:33:00,629 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 06:33:00,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-06 06:33:00,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:00,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-06 06:33:00,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:00,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:00,883 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 06:33:00,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130364481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:00,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:00,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-06 06:33:00,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323514214] [2021-05-06 06:33:00,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 06:33:00,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 06:33:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 06:33:00,884 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 06:33:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:02,626 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-06 06:33:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 06:33:02,627 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 06:33:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:02,627 INFO L225 Difference]: With dead ends: 130 [2021-05-06 06:33:02,627 INFO L226 Difference]: Without dead ends: 130 [2021-05-06 06:33:02,628 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2217.1ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:33:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-06 06:33:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-06 06:33:02,629 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 06:33:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-06 06:33:02,629 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [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 130 states and 144 transitions. [2021-05-06 06:33:02,629 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 06:33:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-06 06:33:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [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 [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:02,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:02,846 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:02,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:02,846 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-06 06:33:02,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:02,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637268798] [2021-05-06 06:33:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:03,669 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 06:33:03,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:03,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637268798] [2021-05-06 06:33:03,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637268798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:03,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749059216] [2021-05-06 06:33:03,669 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 06:33:03,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-06 06:33:03,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:03,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:33:03,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:03,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:03,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:04,483 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 06:33:04,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749059216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:04,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:04,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-06 06:33:04,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629543714] [2021-05-06 06:33:04,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:33:04,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:33:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:33:04,484 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 06:33:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:07,332 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-06 06:33:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:33:07,332 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 06:33:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:07,333 INFO L225 Difference]: With dead ends: 135 [2021-05-06 06:33:07,333 INFO L226 Difference]: Without dead ends: 135 [2021-05-06 06:33:07,333 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3891.2ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:33:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-06 06:33:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-06 06:33:07,335 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 06:33:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-06 06:33:07,335 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-06 06:33:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:07,335 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-06 06:33:07,335 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 06:33:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-06 06:33:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 06:33:07,336 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:07,336 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:07,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:07,553 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-06 06:33:07,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:07,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361671199] [2021-05-06 06:33:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:08,433 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 06:33:08,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:08,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361671199] [2021-05-06 06:33:08,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361671199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:08,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581161188] [2021-05-06 06:33:08,434 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 06:33:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:08,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-06 06:33:08,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:08,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,699 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 06:33:08,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581161188] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:08,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:08,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-06 06:33:08,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190768304] [2021-05-06 06:33:08,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:33:08,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:08,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:33:08,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:33:08,701 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 06:33:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:10,505 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-06 06:33:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 06:33:10,505 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 06:33:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:10,506 INFO L225 Difference]: With dead ends: 136 [2021-05-06 06:33:10,506 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 06:33:10,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2507.4ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 06:33:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 06:33:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-06 06:33:10,508 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 06:33:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-06 06:33:10,508 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-06 06:33:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:10,508 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-06 06:33:10,508 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 06:33:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-06 06:33:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-06 06:33:10,509 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:10,509 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:10,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-06 06:33:10,713 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:10,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-06 06:33:10,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:10,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139912677] [2021-05-06 06:33:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:11,635 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 06:33:11,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:11,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139912677] [2021-05-06 06:33:11,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139912677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:11,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146937545] [2021-05-06 06:33:11,635 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 06:33:11,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:33:11,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:11,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 06:33:11,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:11,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:11,886 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 06:33:11,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146937545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:11,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:11,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-06 06:33:11,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639126409] [2021-05-06 06:33:11,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 06:33:11,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:11,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 06:33:11,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:33:11,888 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 06:33:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:13,868 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-06 06:33:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:33:13,868 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 06:33:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:13,869 INFO L225 Difference]: With dead ends: 138 [2021-05-06 06:33:13,869 INFO L226 Difference]: Without dead ends: 138 [2021-05-06 06:33:13,869 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2583.4ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:33:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-06 06:33:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-06 06:33:13,870 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 06:33:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-06 06:33:13,871 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-06 06:33:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:13,871 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-06 06:33:13,871 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 06:33:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-06 06:33:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-06 06:33:13,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:13,872 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:14,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 06:33:14,089 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-06 06:33:14,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:14,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103073320] [2021-05-06 06:33:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:15,008 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 06:33:15,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:15,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103073320] [2021-05-06 06:33:15,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103073320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:15,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184676495] [2021-05-06 06:33:15,008 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 06:33:15,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-06 06:33:15,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:15,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 06:33:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:15,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:15,819 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 06:33:15,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184676495] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:15,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:15,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-06 06:33:15,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473553367] [2021-05-06 06:33:15,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:33:15,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:33:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:33:15,820 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 06:33:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:18,830 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-06 06:33:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 06:33:18,830 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 06:33:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:18,831 INFO L225 Difference]: With dead ends: 143 [2021-05-06 06:33:18,831 INFO L226 Difference]: Without dead ends: 143 [2021-05-06 06:33:18,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4220.8ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:33:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-06 06:33:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-06 06:33:18,833 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 06:33:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-06 06:33:18,833 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-06 06:33:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:18,834 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-06 06:33:18,834 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 06:33:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-06 06:33:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 06:33:18,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:18,834 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:19,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 06:33:19,049 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-06 06:33:19,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:19,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909977932] [2021-05-06 06:33:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:20,057 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 06:33:20,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:20,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909977932] [2021-05-06 06:33:20,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909977932] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:20,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37864797] [2021-05-06 06:33:20,058 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 06:33:20,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:33:20,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:20,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 06:33:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:20,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:20,331 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 06:33:20,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37864797] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:20,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:20,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-06 06:33:20,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668024516] [2021-05-06 06:33:20,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 06:33:20,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 06:33:20,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 06:33:20,332 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 06:33:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:22,485 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-06 06:33:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 06:33:22,486 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 06:33:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:22,486 INFO L225 Difference]: With dead ends: 144 [2021-05-06 06:33:22,486 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 06:33:22,487 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2813.4ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 06:33:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 06:33:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-06 06:33:22,488 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 06:33:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-06 06:33:22,488 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-06 06:33:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:22,489 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-06 06:33:22,489 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 06:33:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-06 06:33:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 06:33:22,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:22,489 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:22,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:22,705 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:22,705 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-06 06:33:22,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:22,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586216950] [2021-05-06 06:33:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:23,692 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 06:33:23,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:23,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586216950] [2021-05-06 06:33:23,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586216950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:23,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935738006] [2021-05-06 06:33:23,693 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 06:33:23,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-06 06:33:23,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-06 06:33:23,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:23,979 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 06:33:23,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935738006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:23,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:23,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-06 06:33:23,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106409128] [2021-05-06 06:33:23,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:33:23,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:23,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:33:23,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:33:23,980 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 06:33:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:26,140 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-06 06:33:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 06:33:26,140 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 06:33:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:26,141 INFO L225 Difference]: With dead ends: 146 [2021-05-06 06:33:26,141 INFO L226 Difference]: Without dead ends: 146 [2021-05-06 06:33:26,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2813.7ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:33:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-06 06:33:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-06 06:33:26,143 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 06:33:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-06 06:33:26,143 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-06 06:33:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:26,143 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-06 06:33:26,143 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 06:33:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-06 06:33:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-06 06:33:26,144 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:26,144 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:26,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:26,360 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-06 06:33:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:26,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493040739] [2021-05-06 06:33:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:27,364 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 06:33:27,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:27,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493040739] [2021-05-06 06:33:27,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493040739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:27,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85770443] [2021-05-06 06:33:27,364 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 06:33:27,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-06 06:33:27,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:27,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:33:27,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:27,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,312 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 06:33:28,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85770443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:28,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:28,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-06 06:33:28,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7410050] [2021-05-06 06:33:28,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 06:33:28,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 06:33:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 06:33:28,313 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 06:33:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:31,610 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-06 06:33:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:33:31,611 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 06:33:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:31,611 INFO L225 Difference]: With dead ends: 151 [2021-05-06 06:33:31,611 INFO L226 Difference]: Without dead ends: 151 [2021-05-06 06:33:31,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4640.1ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:33:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-06 06:33:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-06 06:33:31,613 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 06:33:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-06 06:33:31,613 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-06 06:33:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:31,613 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-06 06:33:31,614 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 06:33:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-06 06:33:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 06:33:31,614 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:31,614 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:31,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-06 06:33:31,831 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-06 06:33:31,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:31,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991566564] [2021-05-06 06:33:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:32,855 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 06:33:32,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:32,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991566564] [2021-05-06 06:33:32,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991566564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:32,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975357205] [2021-05-06 06:33:32,855 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 06:33:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:32,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-06 06:33:32,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:33,120 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 06:33:33,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975357205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:33,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:33,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-06 06:33:33,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044566778] [2021-05-06 06:33:33,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 06:33:33,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 06:33:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 06:33:33,122 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 06:33:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:35,336 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-06 06:33:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 06:33:35,336 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 06:33:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:35,337 INFO L225 Difference]: With dead ends: 152 [2021-05-06 06:33:35,337 INFO L226 Difference]: Without dead ends: 152 [2021-05-06 06:33:35,337 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3021.6ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 06:33:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-06 06:33:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-06 06:33:35,339 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 06:33:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-06 06:33:35,339 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-06 06:33:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:35,339 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-06 06:33:35,339 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 06:33:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-06 06:33:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-06 06:33:35,340 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:35,340 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:35,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:35,540 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:35,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-06 06:33:35,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:35,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96957617] [2021-05-06 06:33:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:36,641 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 06:33:36,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:36,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96957617] [2021-05-06 06:33:36,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96957617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:36,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759046892] [2021-05-06 06:33:36,642 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 06:33:36,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:33:36,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:36,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 06:33:36,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,941 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 06:33:36,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759046892] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:36,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:36,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-06 06:33:36,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637804718] [2021-05-06 06:33:36,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 06:33:36,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:36,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 06:33:36,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:33:36,942 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 06:33:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:39,298 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-06 06:33:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 06:33:39,299 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 06:33:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:39,299 INFO L225 Difference]: With dead ends: 154 [2021-05-06 06:33:39,299 INFO L226 Difference]: Without dead ends: 154 [2021-05-06 06:33:39,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3174.7ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:33:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-06 06:33:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-06 06:33:39,301 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 06:33:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-06 06:33:39,302 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-06 06:33:39,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:39,302 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-06 06:33:39,302 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 06:33:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-06 06:33:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-06 06:33:39,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:39,302 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:39,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-06 06:33:39,509 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:39,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:39,509 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-06 06:33:39,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:39,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909543213] [2021-05-06 06:33:39,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:40,629 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 06:33:40,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:40,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909543213] [2021-05-06 06:33:40,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909543213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:40,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720807000] [2021-05-06 06:33:40,629 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 06:33:40,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 06:33:40,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:33:40,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:40,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:41,642 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 06:33:41,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720807000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:41,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:41,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-06 06:33:41,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941405784] [2021-05-06 06:33:41,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:33:41,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:33:41,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:33:41,644 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 06:33:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:45,305 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-06 06:33:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:33:45,305 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 06:33:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:45,306 INFO L225 Difference]: With dead ends: 159 [2021-05-06 06:33:45,306 INFO L226 Difference]: Without dead ends: 159 [2021-05-06 06:33:45,307 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 5205.9ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:33:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-06 06:33:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-06 06:33:45,308 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 06:33:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-06 06:33:45,308 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-06 06:33:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:45,308 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-06 06:33:45,308 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 06:33:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-06 06:33:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 06:33:45,309 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:45,309 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:45,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-06 06:33:45,510 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:45,510 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-06 06:33:45,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:45,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525610219] [2021-05-06 06:33:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:46,727 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 06:33:46,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:46,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525610219] [2021-05-06 06:33:46,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525610219] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:46,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903300384] [2021-05-06 06:33:46,727 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 06:33:46,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:33:46,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:46,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 06:33:46,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:46,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,063 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 06:33:47,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903300384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:47,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:47,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-06 06:33:47,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880134730] [2021-05-06 06:33:47,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 06:33:47,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 06:33:47,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 06:33:47,064 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 06:33:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:49,592 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-06 06:33:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:33:49,593 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 06:33:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:49,593 INFO L225 Difference]: With dead ends: 160 [2021-05-06 06:33:49,593 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 06:33:49,594 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3406.0ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 06:33:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 06:33:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-06 06:33:49,595 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 06:33:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-06 06:33:49,595 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-06 06:33:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:49,596 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-06 06:33:49,596 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 06:33:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-06 06:33:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-06 06:33:49,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:49,596 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:49,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-06 06:33:49,797 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-06 06:33:49,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:49,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447467542] [2021-05-06 06:33:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:51,018 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 06:33:51,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:51,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447467542] [2021-05-06 06:33:51,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447467542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:51,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488052365] [2021-05-06 06:33:51,019 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 06:33:51,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-06 06:33:51,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:51,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-06 06:33:51,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:51,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,251 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 06:33:51,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,331 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 06:33:51,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488052365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:51,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:51,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-06 06:33:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576575368] [2021-05-06 06:33:51,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 06:33:51,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 06:33:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 06:33:51,332 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 06:33:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:53,861 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-06 06:33:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 06:33:53,862 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 06:33:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:53,862 INFO L225 Difference]: With dead ends: 162 [2021-05-06 06:33:53,862 INFO L226 Difference]: Without dead ends: 162 [2021-05-06 06:33:53,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3404.9ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:33:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-06 06:33:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-06 06:33:53,864 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 06:33:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-06 06:33:53,864 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-06 06:33:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:53,865 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-06 06:33:53,865 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 06:33:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-06 06:33:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-06 06:33:53,865 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:53,865 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:54,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-06 06:33:54,082 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-06 06:33:54,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:54,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222957246] [2021-05-06 06:33:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:55,376 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 06:33:55,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:55,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222957246] [2021-05-06 06:33:55,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222957246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:55,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200935599] [2021-05-06 06:33:55,376 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 06:33:55,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-06 06:33:55,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:55,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 06:33:55,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:55,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:56,524 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 06:33:56,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200935599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:56,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:56,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-06 06:33:56,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987761540] [2021-05-06 06:33:56,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:33:56,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:33:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:33:56,525 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 06:34:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:00,599 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-06 06:34:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 06:34:00,599 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 06:34:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:00,600 INFO L225 Difference]: With dead ends: 167 [2021-05-06 06:34:00,600 INFO L226 Difference]: Without dead ends: 167 [2021-05-06 06:34:00,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5832.6ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:34:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-06 06:34:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-06 06:34:00,602 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 06:34:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-06 06:34:00,602 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-06 06:34:00,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:00,602 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-06 06:34:00,602 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 06:34:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-06 06:34:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 06:34:00,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:00,603 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:00,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:00,809 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:00,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:00,809 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-06 06:34:00,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:00,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111208083] [2021-05-06 06:34:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:02,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:02,072 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 06:34:02,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:02,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111208083] [2021-05-06 06:34:02,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111208083] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:02,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994248342] [2021-05-06 06:34:02,072 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 06:34:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:02,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-06 06:34:02,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:02,389 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 06:34:02,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994248342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:02,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:02,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-06 06:34:02,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595828371] [2021-05-06 06:34:02,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:34:02,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:02,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:34:02,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:34:02,391 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 06:34:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:05,054 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-06 06:34:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 06:34:05,054 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 06:34:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:05,055 INFO L225 Difference]: With dead ends: 168 [2021-05-06 06:34:05,055 INFO L226 Difference]: Without dead ends: 168 [2021-05-06 06:34:05,055 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3585.9ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 06:34:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-06 06:34:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-06 06:34:05,057 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 06:34:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-06 06:34:05,057 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-06 06:34:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:05,057 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-06 06:34:05,057 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 06:34:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-06 06:34:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 06:34:05,058 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:05,058 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:05,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-06 06:34:05,258 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:05,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-06 06:34:05,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:05,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259154999] [2021-05-06 06:34:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:06,721 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 06:34:06,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:06,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259154999] [2021-05-06 06:34:06,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259154999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:06,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108708394] [2021-05-06 06:34:06,721 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 06:34:06,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:06,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 06:34:06,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:06,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:07,042 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 06:34:07,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108708394] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:07,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:07,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-06 06:34:07,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745208956] [2021-05-06 06:34:07,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 06:34:07,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 06:34:07,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:34:07,043 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 06:34:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:09,938 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-06 06:34:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:34:09,938 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 06:34:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:09,939 INFO L225 Difference]: With dead ends: 170 [2021-05-06 06:34:09,939 INFO L226 Difference]: Without dead ends: 170 [2021-05-06 06:34:09,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3982.1ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 06:34:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-06 06:34:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-06 06:34:09,941 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 06:34:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-06 06:34:09,941 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-06 06:34:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:09,941 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-06 06:34:09,941 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 06:34:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-06 06:34:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-06 06:34:09,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:09,942 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:10,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:10,157 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:10,157 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-06 06:34:10,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:10,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783116454] [2021-05-06 06:34:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:11,521 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 06:34:11,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:11,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783116454] [2021-05-06 06:34:11,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783116454] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:11,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882105816] [2021-05-06 06:34:11,521 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 06:34:11,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-06 06:34:11,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:34:11,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:11,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,720 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 06:34:11,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,813 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 06:34:11,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:12,735 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 06:34:12,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882105816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:12,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:12,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-06 06:34:12,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299270606] [2021-05-06 06:34:12,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 06:34:12,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 06:34:12,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:34:12,736 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 06:34:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:17,115 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-06 06:34:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:34:17,115 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 06:34:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:17,116 INFO L225 Difference]: With dead ends: 175 [2021-05-06 06:34:17,116 INFO L226 Difference]: Without dead ends: 175 [2021-05-06 06:34:17,117 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6262.0ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-06 06:34:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-06 06:34:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-06 06:34:17,118 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 06:34:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-06 06:34:17,118 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-06 06:34:17,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:17,119 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-06 06:34:17,119 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 06:34:17,119 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-06 06:34:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 06:34:17,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:17,119 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:17,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-06 06:34:17,336 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:17,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-06 06:34:17,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:17,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526502821] [2021-05-06 06:34:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:18,773 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 06:34:18,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:18,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526502821] [2021-05-06 06:34:18,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526502821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:18,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704008297] [2021-05-06 06:34:18,773 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 06:34:18,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:18,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:18,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 06:34:18,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:19,075 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 06:34:19,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704008297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:19,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:19,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-06 06:34:19,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959454163] [2021-05-06 06:34:19,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 06:34:19,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 06:34:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 06:34:19,076 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 06:34:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:21,987 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-06 06:34:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 06:34:21,987 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 06:34:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:21,988 INFO L225 Difference]: With dead ends: 176 [2021-05-06 06:34:21,988 INFO L226 Difference]: Without dead ends: 176 [2021-05-06 06:34:21,988 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 3960.0ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 06:34:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-06 06:34:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-06 06:34:21,990 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 06:34:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-06 06:34:21,990 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-06 06:34:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:21,990 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-06 06:34:21,990 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 06:34:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-06 06:34:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-06 06:34:21,991 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:21,991 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:22,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:22,201 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-06 06:34:22,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:22,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876462723] [2021-05-06 06:34:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:23,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:23,655 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 06:34:23,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:23,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876462723] [2021-05-06 06:34:23,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876462723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:23,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981831285] [2021-05-06 06:34:23,656 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 06:34:23,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-06 06:34:23,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:23,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-06 06:34:23,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:23,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:24,016 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 06:34:24,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981831285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:24,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:24,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-06 06:34:24,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252098834] [2021-05-06 06:34:24,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:34:24,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:24,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:34:24,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:34:24,018 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 06:34:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:27,037 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-06 06:34:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 06:34:27,038 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 06:34:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:27,038 INFO L225 Difference]: With dead ends: 178 [2021-05-06 06:34:27,038 INFO L226 Difference]: Without dead ends: 178 [2021-05-06 06:34:27,039 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4081.4ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-06 06:34:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-06 06:34:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-06 06:34:27,040 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 06:34:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-06 06:34:27,041 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-06 06:34:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:27,041 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-06 06:34:27,041 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 06:34:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-06 06:34:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-06 06:34:27,042 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:27,042 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:27,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-06 06:34:27,261 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-06 06:34:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:27,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464361006] [2021-05-06 06:34:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:28,772 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 06:34:28,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:28,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464361006] [2021-05-06 06:34:28,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464361006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:28,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151056283] [2021-05-06 06:34:28,772 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 06:34:28,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-06 06:34:28,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:28,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:34:28,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:29,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:30,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:30,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:30,132 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 06:34:30,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151056283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:30,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:30,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-06 06:34:30,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319795630] [2021-05-06 06:34:30,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:34:30,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:30,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:34:30,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:34:30,133 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 06:34:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:34,823 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-06 06:34:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:34:34,823 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 06:34:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:34,823 INFO L225 Difference]: With dead ends: 183 [2021-05-06 06:34:34,824 INFO L226 Difference]: Without dead ends: 183 [2021-05-06 06:34:34,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 6799.5ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-06 06:34:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-06 06:34:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-06 06:34:34,826 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 06:34:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-06 06:34:34,826 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-06 06:34:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:34,826 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-06 06:34:34,826 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 06:34:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-06 06:34:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 06:34:34,827 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:34,827 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:35,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:35,033 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-06 06:34:35,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:35,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020824483] [2021-05-06 06:34:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,611 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 06:34:36,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:36,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020824483] [2021-05-06 06:34:36,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020824483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:36,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41505535] [2021-05-06 06:34:36,612 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 06:34:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:36,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-06 06:34:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:36,944 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 06:34:36,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41505535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:36,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:36,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-06 06:34:36,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753227165] [2021-05-06 06:34:36,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 06:34:36,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:36,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 06:34:36,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 06:34:36,946 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 06:34:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:40,160 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-06 06:34:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 06:34:40,161 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 06:34:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:40,161 INFO L225 Difference]: With dead ends: 184 [2021-05-06 06:34:40,161 INFO L226 Difference]: Without dead ends: 184 [2021-05-06 06:34:40,162 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4426.2ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 06:34:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-06 06:34:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-06 06:34:40,164 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 06:34:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-06 06:34:40,164 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-06 06:34:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:40,164 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-06 06:34:40,164 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 06:34:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-06 06:34:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-06 06:34:40,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:40,165 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:40,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-06 06:34:40,382 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-06 06:34:40,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:40,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474783198] [2021-05-06 06:34:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:41,983 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 06:34:41,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:41,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474783198] [2021-05-06 06:34:41,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474783198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:41,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562473681] [2021-05-06 06:34:41,983 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 06:34:42,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:42,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:42,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 06:34:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:42,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:42,315 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 06:34:42,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562473681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:42,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:42,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-06 06:34:42,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118848749] [2021-05-06 06:34:42,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 06:34:42,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:42,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 06:34:42,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:34:42,317 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 06:34:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:45,417 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-06 06:34:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 06:34:45,417 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 06:34:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:45,418 INFO L225 Difference]: With dead ends: 186 [2021-05-06 06:34:45,418 INFO L226 Difference]: Without dead ends: 186 [2021-05-06 06:34:45,419 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4451.4ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-06 06:34:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-06 06:34:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-06 06:34:45,420 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 06:34:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-06 06:34:45,421 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-06 06:34:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:45,421 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-06 06:34:45,421 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 06:34:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-06 06:34:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 06:34:45,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:45,421 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:45,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:45,640 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-06 06:34:45,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:45,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030707472] [2021-05-06 06:34:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:47,290 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 06:34:47,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:47,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030707472] [2021-05-06 06:34:47,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030707472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:47,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940713569] [2021-05-06 06:34:47,291 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 06:34:47,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-06 06:34:47,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 06:34:47,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:48,742 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 06:34:48,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940713569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:48,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:48,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-06 06:34:48,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510026968] [2021-05-06 06:34:48,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:34:48,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:48,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:34:48,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:34:48,744 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 06:34:53,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:53,893 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-06 06:34:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 06:34:53,893 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 06:34:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:53,894 INFO L225 Difference]: With dead ends: 191 [2021-05-06 06:34:53,894 INFO L226 Difference]: Without dead ends: 191 [2021-05-06 06:34:53,895 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7519.3ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 06:34:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-06 06:34:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-06 06:34:53,897 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 06:34:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-06 06:34:53,897 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-06 06:34:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:53,897 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-06 06:34:53,897 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 06:34:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-06 06:34:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 06:34:53,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:53,898 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:54,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-06 06:34:54,114 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-06 06:34:54,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:54,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210191606] [2021-05-06 06:34:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:55,888 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 06:34:55,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:55,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210191606] [2021-05-06 06:34:55,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210191606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:55,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538124785] [2021-05-06 06:34:55,889 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 06:34:55,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:55,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:55,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 06:34:55,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:56,256 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 06:34:56,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538124785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:56,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:56,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-06 06:34:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567473720] [2021-05-06 06:34:56,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 06:34:56,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 06:34:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 06:34:56,257 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 06:34:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:59,637 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-06 06:34:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:34:59,638 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 06:34:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:59,638 INFO L225 Difference]: With dead ends: 192 [2021-05-06 06:34:59,638 INFO L226 Difference]: Without dead ends: 192 [2021-05-06 06:34:59,639 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4761.8ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 06:34:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-06 06:34:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-06 06:34:59,640 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 06:34:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-06 06:34:59,641 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-06 06:34:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:59,641 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-06 06:34:59,641 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 06:34:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-06 06:34:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-06 06:34:59,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:59,642 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:59,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-06 06:34:59,842 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:59,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-06 06:34:59,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:59,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794418755] [2021-05-06 06:34:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:01,598 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 06:35:01,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:01,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794418755] [2021-05-06 06:35:01,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794418755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:01,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711552962] [2021-05-06 06:35:01,598 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 06:35:01,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-06 06:35:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:01,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-06 06:35:01,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,994 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 06:35:01,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711552962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:01,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:01,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-06 06:35:01,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746403048] [2021-05-06 06:35:01,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 06:35:01,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 06:35:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 06:35:01,995 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 06:35:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:05,638 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-06 06:35:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 06:35:05,638 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 06:35:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:05,639 INFO L225 Difference]: With dead ends: 194 [2021-05-06 06:35:05,639 INFO L226 Difference]: Without dead ends: 194 [2021-05-06 06:35:05,639 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 4966.3ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-06 06:35:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-06 06:35:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-06 06:35:05,641 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 06:35:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-06 06:35:05,641 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-06 06:35:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:05,641 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-06 06:35:05,641 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 06:35:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-06 06:35:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-06 06:35:05,642 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:05,642 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:05,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-06 06:35:05,843 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:05,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-06 06:35:05,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:05,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852313947] [2021-05-06 06:35:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:07,796 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 06:35:07,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:07,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852313947] [2021-05-06 06:35:07,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852313947] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:07,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276586364] [2021-05-06 06:35:07,796 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 06:35:07,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-06 06:35:07,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:07,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:35:07,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:08,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:09,574 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 06:35:09,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276586364] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:09,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:09,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-06 06:35:09,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012060833] [2021-05-06 06:35:09,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-06 06:35:09,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:09,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-06 06:35:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 06:35:09,576 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 06:35:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:15,308 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-06 06:35:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:35:15,308 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 06:35:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:15,309 INFO L225 Difference]: With dead ends: 199 [2021-05-06 06:35:15,309 INFO L226 Difference]: Without dead ends: 199 [2021-05-06 06:35:15,310 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8555.7ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-06 06:35:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-06 06:35:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-06 06:35:15,312 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 06:35:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-06 06:35:15,312 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-06 06:35:15,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:15,312 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-06 06:35:15,312 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 06:35:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-06 06:35:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 06:35:15,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:15,313 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:15,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:15,529 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-06 06:35:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:15,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480106212] [2021-05-06 06:35:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,474 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 06:35:17,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:17,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480106212] [2021-05-06 06:35:17,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480106212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:17,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835713999] [2021-05-06 06:35:17,474 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 06:35:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-06 06:35:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,837 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 06:35:17,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835713999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:17,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:17,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-06 06:35:17,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084182127] [2021-05-06 06:35:17,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:35:17,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:17,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:35:17,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:35:17,838 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 06:35:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:21,762 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-06 06:35:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 06:35:21,762 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 06:35:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:21,763 INFO L225 Difference]: With dead ends: 200 [2021-05-06 06:35:21,763 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 06:35:21,764 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5398.7ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 06:35:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 06:35:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 06:35:21,765 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 06:35:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-06 06:35:21,765 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-06 06:35:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:21,766 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-06 06:35:21,766 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 06:35:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-06 06:35:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-06 06:35:21,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:21,766 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:21,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:21,997 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-06 06:35:21,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:21,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675803352] [2021-05-06 06:35:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,930 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 06:35:23,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:23,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675803352] [2021-05-06 06:35:23,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675803352] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:23,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613080613] [2021-05-06 06:35:23,930 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 06:35:24,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:24,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 06:35:24,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:24,298 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 06:35:24,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613080613] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:24,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:24,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-06 06:35:24,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843777218] [2021-05-06 06:35:24,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 06:35:24,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 06:35:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:35:24,300 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 06:35:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:28,168 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-06 06:35:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:35:28,168 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 06:35:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:28,169 INFO L225 Difference]: With dead ends: 202 [2021-05-06 06:35:28,169 INFO L226 Difference]: Without dead ends: 202 [2021-05-06 06:35:28,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5496.5ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-06 06:35:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-06 06:35:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-06 06:35:28,176 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 06:35:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-06 06:35:28,176 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-06 06:35:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:28,176 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-06 06:35:28,177 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 06:35:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-06 06:35:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-06 06:35:28,177 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:28,177 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:28,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:28,394 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-06 06:35:28,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:28,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866489479] [2021-05-06 06:35:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:30,396 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 06:35:30,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:30,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866489479] [2021-05-06 06:35:30,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866489479] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:30,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338344658] [2021-05-06 06:35:30,397 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 06:35:30,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 06:35:30,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:30,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:35:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:30,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:32,086 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 06:35:32,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338344658] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:32,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:32,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-06 06:35:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286549971] [2021-05-06 06:35:32,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:35:32,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:35:32,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:35:32,088 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 06:35:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:38,303 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-06 06:35:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:35:38,303 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 06:35:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:38,304 INFO L225 Difference]: With dead ends: 207 [2021-05-06 06:35:38,304 INFO L226 Difference]: Without dead ends: 207 [2021-05-06 06:35:38,305 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 8998.0ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-06 06:35:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-06 06:35:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-06 06:35:38,307 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 06:35:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-06 06:35:38,307 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-06 06:35:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:38,307 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-06 06:35:38,307 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 06:35:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-06 06:35:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 06:35:38,308 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:38,308 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:38,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-06 06:35:38,521 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-06 06:35:38,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:38,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649155380] [2021-05-06 06:35:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,581 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 06:35:40,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:40,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649155380] [2021-05-06 06:35:40,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649155380] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823005078] [2021-05-06 06:35:40,582 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 06:35:40,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:35:40,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:40,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 06:35:40,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,955 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 06:35:40,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823005078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:40,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-06 06:35:40,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638659084] [2021-05-06 06:35:40,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 06:35:40,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:40,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 06:35:40,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 06:35:40,957 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 06:35:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:44,910 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-06 06:35:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 06:35:44,911 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 06:35:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:44,911 INFO L225 Difference]: With dead ends: 208 [2021-05-06 06:35:44,911 INFO L226 Difference]: Without dead ends: 208 [2021-05-06 06:35:44,912 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5730.3ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 06:35:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-06 06:35:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-06 06:35:44,914 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 06:35:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-06 06:35:44,914 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-06 06:35:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:44,914 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-06 06:35:44,914 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 06:35:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-06 06:35:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-06 06:35:44,915 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:44,915 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:45,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:45,132 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-06 06:35:45,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:45,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402025651] [2021-05-06 06:35:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:47,306 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 06:35:47,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402025651] [2021-05-06 06:35:47,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402025651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428899304] [2021-05-06 06:35:47,306 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 06:35:47,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-06 06:35:47,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-06 06:35:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:47,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,770 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 06:35:47,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428899304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:47,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:47,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-06 06:35:47,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060676563] [2021-05-06 06:35:47,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:35:47,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:47,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:35:47,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:35:47,772 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 06:35:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:52,134 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-06 06:35:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 06:35:52,134 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 06:35:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:52,135 INFO L225 Difference]: With dead ends: 210 [2021-05-06 06:35:52,135 INFO L226 Difference]: Without dead ends: 210 [2021-05-06 06:35:52,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6013.1ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-06 06:35:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-06 06:35:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-06 06:35:52,138 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 06:35:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-06 06:35:52,138 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-06 06:35:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:52,138 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-06 06:35:52,138 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 06:35:52,138 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-06 06:35:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-06 06:35:52,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:52,139 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:52,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:52,340 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-06 06:35:52,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:52,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131579513] [2021-05-06 06:35:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:54,428 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 06:35:54,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:54,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131579513] [2021-05-06 06:35:54,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131579513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:54,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994523355] [2021-05-06 06:35:54,428 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 06:35:54,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-06 06:35:54,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:54,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 06:35:54,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:54,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:56,310 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 06:35:56,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994523355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:56,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:56,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-06 06:35:56,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521680711] [2021-05-06 06:35:56,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:35:56,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:56,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:35:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:35:56,312 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 06:36:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:02,827 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-06 06:36:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 06:36:02,827 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 06:36:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:02,828 INFO L225 Difference]: With dead ends: 215 [2021-05-06 06:36:02,828 INFO L226 Difference]: Without dead ends: 215 [2021-05-06 06:36:02,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 9450.1ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-06 06:36:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-06 06:36:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-06 06:36:02,831 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 06:36:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-06 06:36:02,831 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-06 06:36:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:02,831 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-06 06:36:02,831 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 06:36:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-06 06:36:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 06:36:02,832 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:02,832 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:03,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:03,046 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-06 06:36:03,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:03,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602114579] [2021-05-06 06:36:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,217 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 06:36:05,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:05,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602114579] [2021-05-06 06:36:05,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602114579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:05,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532356943] [2021-05-06 06:36:05,218 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 06:36:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-06 06:36:05,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,669 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 06:36:05,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532356943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:05,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:05,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-06 06:36:05,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796649342] [2021-05-06 06:36:05,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 06:36:05,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 06:36:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 06:36:05,670 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 06:36:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:09,957 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-06 06:36:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 06:36:09,957 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 06:36:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:09,958 INFO L225 Difference]: With dead ends: 216 [2021-05-06 06:36:09,958 INFO L226 Difference]: Without dead ends: 216 [2021-05-06 06:36:09,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 5946.9ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 06:36:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-06 06:36:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-06 06:36:09,960 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 06:36:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-06 06:36:09,961 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-06 06:36:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:09,961 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-06 06:36:09,961 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 06:36:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-06 06:36:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-06 06:36:09,961 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:09,962 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:10,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-06 06:36:10,174 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:10,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-06 06:36:10,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:10,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635497742] [2021-05-06 06:36:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:12,366 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 06:36:12,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:12,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635497742] [2021-05-06 06:36:12,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635497742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:12,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688510779] [2021-05-06 06:36:12,366 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 06:36:12,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:36:12,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:12,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 06:36:12,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:12,748 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 06:36:12,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688510779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:12,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:12,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-06 06:36:12,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840751614] [2021-05-06 06:36:12,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 06:36:12,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 06:36:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:36:12,750 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 06:36:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:17,021 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-06 06:36:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 06:36:17,022 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 06:36:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:17,022 INFO L225 Difference]: With dead ends: 218 [2021-05-06 06:36:17,022 INFO L226 Difference]: Without dead ends: 218 [2021-05-06 06:36:17,023 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 5980.3ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-06 06:36:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-06 06:36:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-06 06:36:17,025 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 06:36:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-06 06:36:17,025 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-06 06:36:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:17,025 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-06 06:36:17,025 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 06:36:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-06 06:36:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-06 06:36:17,026 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:17,026 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:17,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:17,226 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:17,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-06 06:36:17,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:17,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340949935] [2021-05-06 06:36:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:19,607 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 06:36:19,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:19,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340949935] [2021-05-06 06:36:19,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340949935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:19,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690232503] [2021-05-06 06:36:19,607 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 06:36:19,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-06 06:36:19,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:19,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:36:19,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:19,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:19,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:20,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:21,566 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 06:36:21,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690232503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:21,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:21,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-06 06:36:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781082321] [2021-05-06 06:36:21,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-06 06:36:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-06 06:36:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:36:21,568 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 06:36:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:28,548 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-06 06:36:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:36:28,549 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 06:36:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:28,549 INFO L225 Difference]: With dead ends: 223 [2021-05-06 06:36:28,549 INFO L226 Difference]: Without dead ends: 223 [2021-05-06 06:36:28,551 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 10355.9ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-06 06:36:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-06 06:36:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-06 06:36:28,552 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 06:36:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-06 06:36:28,553 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-06 06:36:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:28,553 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-06 06:36:28,553 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 06:36:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-06 06:36:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 06:36:28,554 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:28,554 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:28,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-06 06:36:28,771 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-06 06:36:28,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:28,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480260359] [2021-05-06 06:36:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:31,140 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 06:36:31,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:31,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480260359] [2021-05-06 06:36:31,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480260359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:31,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976044391] [2021-05-06 06:36:31,141 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 06:36:31,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:36:31,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:31,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 06:36:31,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:31,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:31,534 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 06:36:31,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976044391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:31,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:31,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-06 06:36:31,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996036546] [2021-05-06 06:36:31,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 06:36:31,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:31,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 06:36:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 06:36:31,536 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 06:36:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:36,037 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-06 06:36:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:36:36,037 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 06:36:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:36,038 INFO L225 Difference]: With dead ends: 224 [2021-05-06 06:36:36,038 INFO L226 Difference]: Without dead ends: 224 [2021-05-06 06:36:36,039 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 6469.0ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 06:36:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-06 06:36:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-06 06:36:36,040 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 06:36:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-06 06:36:36,041 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-06 06:36:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:36,041 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-06 06:36:36,041 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 06:36:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-06 06:36:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-06 06:36:36,042 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:36,042 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:36,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:36,242 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-06 06:36:36,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:36,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306345814] [2021-05-06 06:36:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:38,695 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 06:36:38,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:38,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306345814] [2021-05-06 06:36:38,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306345814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:38,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388362455] [2021-05-06 06:36:38,695 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 06:36:38,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-06 06:36:38,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:38,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-06 06:36:38,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:39,126 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 06:36:39,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388362455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:39,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:39,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-06 06:36:39,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196196547] [2021-05-06 06:36:39,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 06:36:39,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 06:36:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 06:36:39,128 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 06:36:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:43,691 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-06 06:36:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 06:36:43,691 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 06:36:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:43,692 INFO L225 Difference]: With dead ends: 226 [2021-05-06 06:36:43,692 INFO L226 Difference]: Without dead ends: 226 [2021-05-06 06:36:43,693 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 6506.7ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-06 06:36:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-06 06:36:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-06 06:36:43,694 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 06:36:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-06 06:36:43,694 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-06 06:36:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:43,700 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-06 06:36:43,700 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 06:36:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-06 06:36:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-06 06:36:43,700 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:43,701 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:43,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:43,917 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-06 06:36:43,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:43,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494690674] [2021-05-06 06:36:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:46,341 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 06:36:46,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:46,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494690674] [2021-05-06 06:36:46,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494690674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:46,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29094077] [2021-05-06 06:36:46,341 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 06:36:46,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-06 06:36:46,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:36:46,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:46,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:46,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:47,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:48,515 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 06:36:48,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29094077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:48,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:48,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-06 06:36:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677908599] [2021-05-06 06:36:48,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:36:48,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:36:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:36:48,517 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 06:36:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:56,310 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-06 06:36:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:36:56,311 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 06:36:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:56,311 INFO L225 Difference]: With dead ends: 231 [2021-05-06 06:36:56,311 INFO L226 Difference]: Without dead ends: 231 [2021-05-06 06:36:56,313 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 11078.0ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-06 06:36:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-06 06:36:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-06 06:36:56,314 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 06:36:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-06 06:36:56,315 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-06 06:36:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:56,315 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-06 06:36:56,315 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 06:36:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-06 06:36:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 06:36:56,316 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:56,316 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:56,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:56,533 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:56,533 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-06 06:36:56,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:56,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355266148] [2021-05-06 06:36:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:59,161 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 06:36:59,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:59,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355266148] [2021-05-06 06:36:59,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355266148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:59,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204235891] [2021-05-06 06:36:59,162 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 06:36:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:59,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-06 06:36:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:59,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:59,578 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 06:36:59,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204235891] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:59,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:59,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-06 06:36:59,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651867248] [2021-05-06 06:36:59,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:36:59,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:36:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:36:59,580 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 06:37:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:04,219 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-06 06:37:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 06:37:04,220 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 06:37:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:04,221 INFO L225 Difference]: With dead ends: 232 [2021-05-06 06:37:04,221 INFO L226 Difference]: Without dead ends: 232 [2021-05-06 06:37:04,221 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 6888.9ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 06:37:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-06 06:37:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-06 06:37:04,223 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 06:37:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-06 06:37:04,224 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-06 06:37:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:04,224 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-06 06:37:04,224 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 06:37:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-06 06:37:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-06 06:37:04,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:04,225 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:04,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:04,425 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:04,426 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-06 06:37:04,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:04,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880696985] [2021-05-06 06:37:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:07,076 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 06:37:07,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:07,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880696985] [2021-05-06 06:37:07,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880696985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:07,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775228977] [2021-05-06 06:37:07,077 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 06:37:07,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:37:07,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:07,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 06:37:07,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:07,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:07,504 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 06:37:07,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775228977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:07,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:07,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-06 06:37:07,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635665340] [2021-05-06 06:37:07,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 06:37:07,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:07,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 06:37:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:37:07,506 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 06:37:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:12,272 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-06 06:37:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:37:12,272 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 06:37:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:12,273 INFO L225 Difference]: With dead ends: 234 [2021-05-06 06:37:12,273 INFO L226 Difference]: Without dead ends: 234 [2021-05-06 06:37:12,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 7027.5ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-06 06:37:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-06 06:37:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-06 06:37:12,275 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 06:37:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-06 06:37:12,275 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-06 06:37:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:12,276 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-06 06:37:12,276 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 06:37:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-06 06:37:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-06 06:37:12,276 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:12,276 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:12,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:12,477 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-06 06:37:12,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:12,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003765669] [2021-05-06 06:37:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:15,068 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 06:37:15,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:15,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003765669] [2021-05-06 06:37:15,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003765669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:15,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071681604] [2021-05-06 06:37:15,069 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 06:37:15,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-06 06:37:15,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:15,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 06:37:15,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:15,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:15,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:17,302 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 06:37:17,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071681604] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:17,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:17,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-06 06:37:17,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136191142] [2021-05-06 06:37:17,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:37:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:37:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:37:17,304 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 06:37:25,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:25,670 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-06 06:37:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 06:37:25,670 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 06:37:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:25,671 INFO L225 Difference]: With dead ends: 239 [2021-05-06 06:37:25,671 INFO L226 Difference]: Without dead ends: 239 [2021-05-06 06:37:25,672 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 11982.7ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-06 06:37:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-06 06:37:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-06 06:37:25,674 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 06:37:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-06 06:37:25,674 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-06 06:37:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:25,675 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-06 06:37:25,675 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 06:37:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-06 06:37:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 06:37:25,675 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:25,675 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:25,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:25,893 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-06 06:37:25,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:25,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935556542] [2021-05-06 06:37:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:28,614 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 06:37:28,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935556542] [2021-05-06 06:37:28,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935556542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506678481] [2021-05-06 06:37:28,614 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 06:37:28,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:37:28,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:28,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 06:37:28,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:28,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:28,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:29,031 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 06:37:29,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506678481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:29,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:29,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-06 06:37:29,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287858521] [2021-05-06 06:37:29,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 06:37:29,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:29,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 06:37:29,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 06:37:29,032 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 06:37:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:33,891 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-06 06:37:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 06:37:33,892 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 06:37:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:33,892 INFO L225 Difference]: With dead ends: 240 [2021-05-06 06:37:33,892 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 06:37:33,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 7164.3ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 06:37:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 06:37:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-06 06:37:33,895 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 06:37:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-06 06:37:33,895 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-06 06:37:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:33,895 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-06 06:37:33,895 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 06:37:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-06 06:37:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 06:37:33,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:33,896 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:34,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:34,112 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:34,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:34,112 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-06 06:37:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:34,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66200562] [2021-05-06 06:37:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:36,820 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 06:37:36,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:36,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66200562] [2021-05-06 06:37:36,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66200562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:36,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098978438] [2021-05-06 06:37:36,820 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 06:37:36,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-06 06:37:36,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:36,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-06 06:37:36,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:36,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:36,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:37,291 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 06:37:37,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098978438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:37,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:37,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-06 06:37:37,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267941628] [2021-05-06 06:37:37,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:37:37,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:37:37,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:37:37,293 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 06:37:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:42,285 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-06 06:37:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 06:37:42,285 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 06:37:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:42,286 INFO L225 Difference]: With dead ends: 242 [2021-05-06 06:37:42,286 INFO L226 Difference]: Without dead ends: 242 [2021-05-06 06:37:42,287 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 7274.3ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-06 06:37:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-06 06:37:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-06 06:37:42,288 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 06:37:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-06 06:37:42,289 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-06 06:37:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:42,289 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-06 06:37:42,289 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 06:37:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-06 06:37:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-06 06:37:42,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:42,290 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:42,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-06 06:37:42,490 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:42,491 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-06 06:37:42,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:42,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621060297] [2021-05-06 06:37:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:45,235 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 06:37:45,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:45,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621060297] [2021-05-06 06:37:45,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621060297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:45,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384652366] [2021-05-06 06:37:45,235 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 06:37:45,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-06 06:37:45,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:37:45,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:45,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:47,685 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 06:37:47,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384652366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:47,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:47,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-06 06:37:47,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365195308] [2021-05-06 06:37:47,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-06 06:37:47,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:47,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-06 06:37:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 06:37:47,687 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 06:37:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:56,387 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-06 06:37:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:37:56,387 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 06:37:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:56,388 INFO L225 Difference]: With dead ends: 247 [2021-05-06 06:37:56,388 INFO L226 Difference]: Without dead ends: 247 [2021-05-06 06:37:56,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 12671.9ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-06 06:37:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-06 06:37:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-06 06:37:56,393 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 06:37:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-06 06:37:56,393 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-06 06:37:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:56,393 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-06 06:37:56,394 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 06:37:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-06 06:37:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 06:37:56,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:56,395 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:56,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:56,595 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:56,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-06 06:37:56,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:56,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746397447] [2021-05-06 06:37:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:59,455 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 06:37:59,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:59,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746397447] [2021-05-06 06:37:59,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746397447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:59,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83219916] [2021-05-06 06:37:59,456 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 06:37:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:59,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-06 06:37:59,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:59,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:59,880 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 06:37:59,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83219916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:59,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:59,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-06 06:37:59,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045605264] [2021-05-06 06:37:59,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-06 06:37:59,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:59,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-06 06:37:59,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-06 06:37:59,882 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 06:38:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:05,133 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-06 06:38:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 06:38:05,134 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 06:38:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:05,134 INFO L225 Difference]: With dead ends: 248 [2021-05-06 06:38:05,135 INFO L226 Difference]: Without dead ends: 248 [2021-05-06 06:38:05,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 7664.2ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 06:38:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-06 06:38:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-06 06:38:05,137 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 06:38:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-06 06:38:05,137 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-06 06:38:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:05,138 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-06 06:38:05,138 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 06:38:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-06 06:38:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-06 06:38:05,138 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:05,138 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:05,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-06 06:38:05,339 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-06 06:38:05,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:05,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019646302] [2021-05-06 06:38:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:08,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:08,376 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 06:38:08,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:08,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019646302] [2021-05-06 06:38:08,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019646302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:08,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564625041] [2021-05-06 06:38:08,376 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 06:38:08,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:38:08,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:08,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 06:38:08,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:08,841 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 06:38:08,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564625041] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:08,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:08,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-06 06:38:08,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143276324] [2021-05-06 06:38:08,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 06:38:08,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:08,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 06:38:08,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:38:08,843 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 06:38:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:14,085 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-06 06:38:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 06:38:14,086 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 06:38:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:14,086 INFO L225 Difference]: With dead ends: 250 [2021-05-06 06:38:14,087 INFO L226 Difference]: Without dead ends: 250 [2021-05-06 06:38:14,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 7880.5ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-06 06:38:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-06 06:38:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-06 06:38:14,089 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 06:38:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-06 06:38:14,089 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-06 06:38:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:14,089 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-06 06:38:14,090 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 06:38:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-06 06:38:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-06 06:38:14,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:14,090 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:14,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:14,307 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-06 06:38:14,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:14,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888987882] [2021-05-06 06:38:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:17,254 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 06:38:17,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:17,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888987882] [2021-05-06 06:38:17,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888987882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:17,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697333995] [2021-05-06 06:38:17,254 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 06:38:17,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-06 06:38:17,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:38:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:18,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:19,851 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 06:38:19,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697333995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:19,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:19,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-06 06:38:19,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114190879] [2021-05-06 06:38:19,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 06:38:19,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 06:38:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:38:19,853 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 06:38:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:28,797 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-06 06:38:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-06 06:38:28,797 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 06:38:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:28,798 INFO L225 Difference]: With dead ends: 255 [2021-05-06 06:38:28,798 INFO L226 Difference]: Without dead ends: 255 [2021-05-06 06:38:28,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 13279.7ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-06 06:38:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-06 06:38:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-06 06:38:28,802 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 06:38:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-06 06:38:28,803 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-06 06:38:28,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:28,803 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-06 06:38:28,803 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 06:38:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-06 06:38:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-06 06:38:28,804 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:28,804 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:29,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:29,017 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:29,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-06 06:38:29,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:29,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795251504] [2021-05-06 06:38:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:32,185 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 06:38:32,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:32,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795251504] [2021-05-06 06:38:32,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795251504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:32,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483260232] [2021-05-06 06:38:32,185 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 06:38:32,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:38:32,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:32,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 06:38:32,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:32,655 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 06:38:32,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483260232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:32,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:32,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-06 06:38:32,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135831598] [2021-05-06 06:38:32,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 06:38:32,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:32,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 06:38:32,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 06:38:32,657 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 06:38:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:38,698 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-06 06:38:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:38:38,699 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 06:38:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:38,699 INFO L225 Difference]: With dead ends: 256 [2021-05-06 06:38:38,699 INFO L226 Difference]: Without dead ends: 256 [2021-05-06 06:38:38,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 8808.4ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 06:38:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-06 06:38:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-06 06:38:38,702 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 06:38:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-06 06:38:38,702 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-06 06:38:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:38,703 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-06 06:38:38,703 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 06:38:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-06 06:38:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-06 06:38:38,703 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:38,704 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:38,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:38,904 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-06 06:38:38,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:38,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924855047] [2021-05-06 06:38:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:42,231 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 06:38:42,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:42,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924855047] [2021-05-06 06:38:42,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924855047] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:42,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466227717] [2021-05-06 06:38:42,232 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 06:38:42,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-06 06:38:42,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:42,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-06 06:38:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:42,745 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 06:38:42,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466227717] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:42,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:42,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-06 06:38:42,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653853053] [2021-05-06 06:38:42,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-06 06:38:42,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:42,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-06 06:38:42,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-06 06:38:42,747 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 06:38:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:48,241 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-06 06:38:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 06:38:48,241 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 06:38:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:48,242 INFO L225 Difference]: With dead ends: 258 [2021-05-06 06:38:48,242 INFO L226 Difference]: Without dead ends: 258 [2021-05-06 06:38:48,243 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 8430.8ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-06 06:38:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-06 06:38:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-06 06:38:48,245 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 06:38:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-06 06:38:48,245 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-06 06:38:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:48,245 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-06 06:38:48,246 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 06:38:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-06 06:38:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-06 06:38:48,246 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:48,246 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:48,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:48,447 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-06 06:38:48,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:48,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526929338] [2021-05-06 06:38:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:51,666 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 06:38:51,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:51,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526929338] [2021-05-06 06:38:51,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526929338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:51,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665847449] [2021-05-06 06:38:51,666 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 06:38:51,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-06 06:38:51,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 06:38:51,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:52,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:54,455 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 06:38:54,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665847449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:54,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:54,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-06 06:38:54,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075864688] [2021-05-06 06:38:54,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-06 06:38:54,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:54,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-06 06:38:54,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-06 06:38:54,457 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 06:39:03,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:03,930 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-06 06:39:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-06 06:39:03,930 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 06:39:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:03,931 INFO L225 Difference]: With dead ends: 263 [2021-05-06 06:39:03,931 INFO L226 Difference]: Without dead ends: 263 [2021-05-06 06:39:03,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 14182.1ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-06 06:39:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-06 06:39:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-06 06:39:03,935 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 06:39:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-06 06:39:03,935 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-06 06:39:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:03,935 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-06 06:39:03,935 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 06:39:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-06 06:39:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-06 06:39:03,936 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:03,936 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:04,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-06 06:39:04,153 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-06 06:39:04,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:04,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322647221] [2021-05-06 06:39:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:07,432 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 06:39:07,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:07,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322647221] [2021-05-06 06:39:07,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322647221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:07,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457832386] [2021-05-06 06:39:07,432 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 06:39:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:07,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-06 06:39:07,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:07,896 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 06:39:07,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457832386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:07,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:07,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-06 06:39:07,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573684647] [2021-05-06 06:39:07,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:39:07,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:07,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:39:07,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:39:07,898 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 06:39:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:13,748 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-06 06:39:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 06:39:13,749 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 06:39:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:13,750 INFO L225 Difference]: With dead ends: 264 [2021-05-06 06:39:13,750 INFO L226 Difference]: Without dead ends: 264 [2021-05-06 06:39:13,751 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 8645.3ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-06 06:39:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-06 06:39:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-06 06:39:13,753 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 06:39:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-06 06:39:13,753 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-06 06:39:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:13,753 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-06 06:39:13,753 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 06:39:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-06 06:39:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-06 06:39:13,754 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:13,754 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:13,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:13,955 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-06 06:39:13,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:13,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263349437] [2021-05-06 06:39:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:17,212 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 06:39:17,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:17,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263349437] [2021-05-06 06:39:17,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263349437] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:17,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706228857] [2021-05-06 06:39:17,213 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 06:39:17,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:39:17,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 06:39:17,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:17,705 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 06:39:17,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706228857] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:17,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:17,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-06 06:39:17,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311451632] [2021-05-06 06:39:17,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 06:39:17,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:17,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 06:39:17,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:39:17,707 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 06:39:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:23,550 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-06 06:39:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:39:23,551 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 06:39:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:23,551 INFO L225 Difference]: With dead ends: 266 [2021-05-06 06:39:23,552 INFO L226 Difference]: Without dead ends: 266 [2021-05-06 06:39:23,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 8708.8ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-06 06:39:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-06 06:39:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-06 06:39:23,554 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 06:39:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-06 06:39:23,555 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-06 06:39:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:23,555 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-06 06:39:23,555 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 06:39:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-06 06:39:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-06 06:39:23,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:23,556 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:23,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-06 06:39:23,756 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-06 06:39:23,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:23,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444954953] [2021-05-06 06:39:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:27,122 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 06:39:27,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:27,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444954953] [2021-05-06 06:39:27,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444954953] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:27,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301544743] [2021-05-06 06:39:27,122 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 06:39:27,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-06 06:39:27,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:27,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:39:27,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:27,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:29,987 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 06:39:29,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301544743] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:29,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:29,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-06 06:39:29,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595763869] [2021-05-06 06:39:29,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-06 06:39:29,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-06 06:39:29,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:39:29,990 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 06:39:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:40,220 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-06 06:39:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-06 06:39:40,221 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 06:39:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:40,221 INFO L225 Difference]: With dead ends: 271 [2021-05-06 06:39:40,221 INFO L226 Difference]: Without dead ends: 271 [2021-05-06 06:39:40,224 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 15132.9ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-06 06:39:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-06 06:39:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-06 06:39:40,225 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 06:39:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-06 06:39:40,226 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-06 06:39:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:40,226 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-06 06:39:40,226 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 06:39:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-06 06:39:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-06 06:39:40,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:40,227 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:40,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:40,428 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-06 06:39:40,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:40,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123443966] [2021-05-06 06:39:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:43,868 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 06:39:43,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:43,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123443966] [2021-05-06 06:39:43,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123443966] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:43,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72113223] [2021-05-06 06:39:43,869 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 06:39:43,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:39:43,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:43,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 06:39:43,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:43,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:43,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:44,385 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 06:39:44,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72113223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:44,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:44,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-06 06:39:44,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978508123] [2021-05-06 06:39:44,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 06:39:44,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 06:39:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 06:39:44,386 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 06:39:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:50,562 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-06 06:39:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 06:39:50,562 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 06:39:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:50,563 INFO L225 Difference]: With dead ends: 272 [2021-05-06 06:39:50,563 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 06:39:50,564 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 9139.5ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-06 06:39:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 06:39:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 06:39:50,566 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 06:39:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-06 06:39:50,566 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-06 06:39:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:50,567 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-06 06:39:50,567 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 06:39:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-06 06:39:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-06 06:39:50,567 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:50,568 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:50,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:50,768 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:50,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-06 06:39:50,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:50,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586474818] [2021-05-06 06:39:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:54,238 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 06:39:54,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:54,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586474818] [2021-05-06 06:39:54,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586474818] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:54,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913982212] [2021-05-06 06:39:54,238 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 06:39:54,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-06 06:39:54,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:54,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-06 06:39:54,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:54,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:54,779 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 06:39:54,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913982212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:54,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:54,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-06 06:39:54,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080562364] [2021-05-06 06:39:54,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:39:54,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:54,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:39:54,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:39:54,781 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 06:40:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:01,018 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-06 06:40:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 06:40:01,019 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 06:40:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:01,019 INFO L225 Difference]: With dead ends: 274 [2021-05-06 06:40:01,020 INFO L226 Difference]: Without dead ends: 274 [2021-05-06 06:40:01,021 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 9190.5ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-06 06:40:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-06 06:40:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-06 06:40:01,022 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 06:40:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-06 06:40:01,023 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-06 06:40:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:01,023 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-06 06:40:01,023 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 06:40:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-06 06:40:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-06 06:40:01,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:01,024 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:01,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-06 06:40:01,229 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:01,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-06 06:40:01,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:01,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720674087] [2021-05-06 06:40:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:04,946 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 06:40:04,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:04,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720674087] [2021-05-06 06:40:04,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720674087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:04,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409287155] [2021-05-06 06:40:04,946 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 06:40:05,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-06 06:40:05,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:05,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:40:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:06,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:08,231 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 06:40:08,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409287155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:08,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:08,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-06 06:40:08,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433438393] [2021-05-06 06:40:08,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-06 06:40:08,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:08,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-06 06:40:08,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-06 06:40:08,234 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 06:40:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:19,094 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-06 06:40:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-06 06:40:19,094 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 06:40:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:19,095 INFO L225 Difference]: With dead ends: 279 [2021-05-06 06:40:19,095 INFO L226 Difference]: Without dead ends: 279 [2021-05-06 06:40:19,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 16355.0ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-06 06:40:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-06 06:40:19,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-06 06:40:19,110 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 06:40:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-06 06:40:19,110 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-06 06:40:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:19,110 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-06 06:40:19,110 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 06:40:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-06 06:40:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-06 06:40:19,111 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:19,111 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:19,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-06 06:40:19,313 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:19,314 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-06 06:40:19,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:19,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938769756] [2021-05-06 06:40:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:23,033 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 06:40:23,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:23,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938769756] [2021-05-06 06:40:23,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938769756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:23,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819893328] [2021-05-06 06:40:23,033 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 06:40:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 06:40:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:23,509 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 06:40:23,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819893328] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:23,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:23,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-06 06:40:23,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644215027] [2021-05-06 06:40:23,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-06 06:40:23,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-06 06:40:23,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-06 06:40:23,511 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 06:40:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:30,096 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-06 06:40:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 06:40:30,096 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 06:40:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:30,097 INFO L225 Difference]: With dead ends: 280 [2021-05-06 06:40:30,097 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 06:40:30,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 9805.4ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-06 06:40:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 06:40:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-06 06:40:30,100 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 06:40:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-06 06:40:30,100 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-06 06:40:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:30,101 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-06 06:40:30,101 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 06:40:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-06 06:40:30,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-06 06:40:30,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:30,102 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:30,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:30,317 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:30,317 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-06 06:40:30,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:30,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181600900] [2021-05-06 06:40:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:34,036 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 06:40:34,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:34,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181600900] [2021-05-06 06:40:34,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181600900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:34,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849783969] [2021-05-06 06:40:34,037 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 06:40:34,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:40:34,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:34,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 06:40:34,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:34,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:34,533 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 06:40:34,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849783969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:34,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:34,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-06 06:40:34,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115465485] [2021-05-06 06:40:34,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 06:40:34,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:34,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 06:40:34,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:40:34,534 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 06:40:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:41,479 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-06 06:40:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 06:40:41,480 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 06:40:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:41,480 INFO L225 Difference]: With dead ends: 282 [2021-05-06 06:40:41,480 INFO L226 Difference]: Without dead ends: 282 [2021-05-06 06:40:41,482 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 10114.3ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-06 06:40:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-06 06:40:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-06 06:40:41,483 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 06:40:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-06 06:40:41,484 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-06 06:40:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:41,484 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-06 06:40:41,484 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 06:40:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-06 06:40:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-06 06:40:41,485 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:41,485 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:41,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-06 06:40:41,685 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:41,686 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-06 06:40:41,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:41,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587719275] [2021-05-06 06:40:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:45,480 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 06:40:45,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:45,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587719275] [2021-05-06 06:40:45,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587719275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:45,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226670334] [2021-05-06 06:40:45,480 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 06:40:45,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-06 06:40:45,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:45,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 06:40:45,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:48,729 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 06:40:48,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226670334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:48,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:48,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-06 06:40:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763526883] [2021-05-06 06:40:48,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-06 06:40:48,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:48,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-06 06:40:48,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:40:48,732 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 06:41:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:00,047 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-06 06:41:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-06 06:41:00,047 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 06:41:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:00,048 INFO L225 Difference]: With dead ends: 287 [2021-05-06 06:41:00,048 INFO L226 Difference]: Without dead ends: 287 [2021-05-06 06:41:00,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 16897.9ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-06 06:41:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-06 06:41:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-06 06:41:00,052 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 06:41:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-06 06:41:00,052 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-06 06:41:00,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:00,053 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-06 06:41:00,053 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 06:41:00,053 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-06 06:41:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-06 06:41:00,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:00,054 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:00,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-06 06:41:00,255 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-06 06:41:00,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:00,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991153139] [2021-05-06 06:41:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:04,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:04,057 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 06:41:04,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:04,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991153139] [2021-05-06 06:41:04,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991153139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:04,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351621747] [2021-05-06 06:41:04,057 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 06:41:04,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:41:04,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:04,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-06 06:41:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:04,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:04,576 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 06:41:04,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351621747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:04,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:04,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-06 06:41:04,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945716516] [2021-05-06 06:41:04,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 06:41:04,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 06:41:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 06:41:04,578 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 06:41:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:11,465 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-06 06:41:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:41:11,466 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 06:41:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:11,466 INFO L225 Difference]: With dead ends: 288 [2021-05-06 06:41:11,466 INFO L226 Difference]: Without dead ends: 288 [2021-05-06 06:41:11,468 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 10149.5ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-06 06:41:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-06 06:41:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-06 06:41:11,469 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 06:41:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-06 06:41:11,470 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-06 06:41:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:11,470 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-06 06:41:11,470 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 06:41:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-06 06:41:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-06 06:41:11,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:11,471 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:11,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-06 06:41:11,685 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-06 06:41:11,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:11,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961005640] [2021-05-06 06:41:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:15,580 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 06:41:15,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:15,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961005640] [2021-05-06 06:41:15,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961005640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:15,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738748814] [2021-05-06 06:41:15,580 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 06:41:15,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-06 06:41:15,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:15,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-06 06:41:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:15,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:16,146 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 06:41:16,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738748814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:16,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:16,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-06 06:41:16,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673166867] [2021-05-06 06:41:16,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-06 06:41:16,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:16,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-06 06:41:16,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-06 06:41:16,147 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 06:41:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:23,131 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-06 06:41:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 06:41:23,132 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 06:41:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:23,132 INFO L225 Difference]: With dead ends: 290 [2021-05-06 06:41:23,132 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 06:41:23,134 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 10322.1ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-06 06:41:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 06:41:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-06 06:41:23,135 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 06:41:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-06 06:41:23,136 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-06 06:41:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:23,136 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-06 06:41:23,136 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 06:41:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-06 06:41:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-06 06:41:23,137 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:23,137 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:23,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:23,349 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-06 06:41:23,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:23,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175639560] [2021-05-06 06:41:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:27,407 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 06:41:27,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:27,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175639560] [2021-05-06 06:41:27,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175639560] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:27,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879031667] [2021-05-06 06:41:27,408 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 06:41:27,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-06 06:41:27,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:27,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:41:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:27,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:28,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:29,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:30,835 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 06:41:30,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879031667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:30,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:30,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-06 06:41:30,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412101319] [2021-05-06 06:41:30,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-06 06:41:30,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:30,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-06 06:41:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 06:41:30,838 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 06:41:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:42,787 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-06 06:41:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-06 06:41:42,788 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 06:41:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:42,788 INFO L225 Difference]: With dead ends: 295 [2021-05-06 06:41:42,788 INFO L226 Difference]: Without dead ends: 295 [2021-05-06 06:41:42,791 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 17844.8ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-06 06:41:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-06 06:41:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-06 06:41:42,793 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 06:41:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-06 06:41:42,793 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-06 06:41:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:42,793 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-06 06:41:42,793 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 06:41:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-06 06:41:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 06:41:42,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:42,794 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:42,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-06 06:41:42,995 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:42,995 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-06 06:41:42,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:42,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401294659] [2021-05-06 06:41:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:47,065 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 06:41:47,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:47,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401294659] [2021-05-06 06:41:47,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401294659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:47,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38633821] [2021-05-06 06:41:47,065 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 06:41:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:47,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-06 06:41:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:47,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:47,577 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 06:41:47,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38633821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:47,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:47,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-06 06:41:47,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617256608] [2021-05-06 06:41:47,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:41:47,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:47,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:41:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:41:47,579 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 06:41:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:54,736 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-06 06:41:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 06:41:54,737 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 06:41:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:54,738 INFO L225 Difference]: With dead ends: 296 [2021-05-06 06:41:54,738 INFO L226 Difference]: Without dead ends: 296 [2021-05-06 06:41:54,740 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 10795.4ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-06 06:41:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-06 06:41:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-06 06:41:54,742 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 06:41:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-06 06:41:54,742 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-06 06:41:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:54,742 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-06 06:41:54,742 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 06:41:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-06 06:41:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-06 06:41:54,743 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:54,743 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:54,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-06 06:41:54,944 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-06 06:41:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:54,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702917577] [2021-05-06 06:41:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:59,559 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 06:41:59,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:59,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702917577] [2021-05-06 06:41:59,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702917577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:59,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553378736] [2021-05-06 06:41:59,560 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 06:41:59,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:41:59,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:59,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-06 06:41:59,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:59,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:00,117 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 06:42:00,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553378736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:00,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:00,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-06 06:42:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238104716] [2021-05-06 06:42:00,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 06:42:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 06:42:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:42:00,119 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 06:42:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:07,660 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-06 06:42:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:42:07,661 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 06:42:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:07,661 INFO L225 Difference]: With dead ends: 298 [2021-05-06 06:42:07,661 INFO L226 Difference]: Without dead ends: 298 [2021-05-06 06:42:07,663 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 11696.2ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-06 06:42:07,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-06 06:42:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-06 06:42:07,664 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 06:42:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-06 06:42:07,664 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-06 06:42:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:07,665 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-06 06:42:07,665 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 06:42:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-06 06:42:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-06 06:42:07,665 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:07,665 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:07,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:07,866 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:07,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-06 06:42:07,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:07,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355354486] [2021-05-06 06:42:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:12,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:12,031 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 06:42:12,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:12,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355354486] [2021-05-06 06:42:12,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355354486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:12,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283424587] [2021-05-06 06:42:12,031 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 06:42:12,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-06 06:42:12,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:12,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:42:12,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:12,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:14,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:15,541 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 06:42:15,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283424587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:15,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:15,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-06 06:42:15,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069847668] [2021-05-06 06:42:15,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-06 06:42:15,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:15,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-06 06:42:15,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:42:15,544 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 06:42:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:28,058 INFO L93 Difference]: Finished difference Result 303 states and 340 transitions. [2021-05-06 06:42:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-06 06:42:28,058 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 06:42:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:28,059 INFO L225 Difference]: With dead ends: 303 [2021-05-06 06:42:28,059 INFO L226 Difference]: Without dead ends: 303 [2021-05-06 06:42:28,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 18585.2ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-06 06:42:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-05-06 06:42:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-05-06 06:42:28,063 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 06:42:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 338 transitions. [2021-05-06 06:42:28,063 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 338 transitions. Word has length 297 [2021-05-06 06:42:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:28,063 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 338 transitions. [2021-05-06 06:42:28,063 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 06:42:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 338 transitions. [2021-05-06 06:42:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-06 06:42:28,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:28,064 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:28,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:28,265 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1755440904, now seen corresponding path program 106 times [2021-05-06 06:42:28,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:28,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935186553] [2021-05-06 06:42:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:32,498 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 06:42:32,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:32,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935186553] [2021-05-06 06:42:32,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935186553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:32,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061047430] [2021-05-06 06:42:32,498 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 06:42:32,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:42:32,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:32,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-06 06:42:32,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:32,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:32,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:33,014 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 06:42:33,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061047430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:33,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:33,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-06 06:42:33,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622523113] [2021-05-06 06:42:33,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 06:42:33,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:33,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 06:42:33,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 06:42:33,016 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 06:42:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:40,555 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2021-05-06 06:42:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 06:42:40,555 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 06:42:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:40,556 INFO L225 Difference]: With dead ends: 304 [2021-05-06 06:42:40,556 INFO L226 Difference]: Without dead ends: 304 [2021-05-06 06:42:40,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 11183.9ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-06 06:42:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-06 06:42:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-06 06:42:40,559 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 06:42:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 340 transitions. [2021-05-06 06:42:40,559 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 340 transitions. Word has length 301 [2021-05-06 06:42:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:40,559 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 340 transitions. [2021-05-06 06:42:40,559 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 06:42:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 340 transitions. [2021-05-06 06:42:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-06 06:42:40,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:40,560 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:40,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:40,769 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:40,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:40,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1856117860, now seen corresponding path program 107 times [2021-05-06 06:42:40,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:40,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226244225] [2021-05-06 06:42:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,079 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 06:42:45,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:45,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226244225] [2021-05-06 06:42:45,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226244225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550820257] [2021-05-06 06:42:45,079 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 06:42:45,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 146 check-sat command(s) [2021-05-06 06:42:45,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:45,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-06 06:42:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,682 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 06:42:45,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550820257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:45,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-06 06:42:45,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987032286] [2021-05-06 06:42:45,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:42:45,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:45,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:42:45,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:42:45,684 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 06:42:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:53,199 INFO L93 Difference]: Finished difference Result 306 states and 342 transitions. [2021-05-06 06:42:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 06:42:53,199 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 06:42:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:53,200 INFO L225 Difference]: With dead ends: 306 [2021-05-06 06:42:53,200 INFO L226 Difference]: Without dead ends: 306 [2021-05-06 06:42:53,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 11393.3ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-06 06:42:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-05-06 06:42:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-05-06 06:42:53,202 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 06:42:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 342 transitions. [2021-05-06 06:42:53,203 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 342 transitions. Word has length 303 [2021-05-06 06:42:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:53,203 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 342 transitions. [2021-05-06 06:42:53,203 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 06:42:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 342 transitions. [2021-05-06 06:42:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-05-06 06:42:53,204 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:53,204 INFO L523 BasicCegarLoop]: trace histogram [146, 111, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:53,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:53,404 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash -177575232, now seen corresponding path program 108 times [2021-05-06 06:42:53,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:53,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144558270] [2021-05-06 06:42:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:57,825 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 06:42:57,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:57,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144558270] [2021-05-06 06:42:57,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144558270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:57,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430932228] [2021-05-06 06:42:57,825 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 06:42:58,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2021-05-06 06:42:58,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 06:42:58,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:00,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:01,633 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 06:43:01,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430932228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:01,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:01,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 38] total 151 [2021-05-06 06:43:01,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740488998] [2021-05-06 06:43:01,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 151 states [2021-05-06 06:43:01,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-05-06 06:43:01,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2021-05-06 06:43:01,636 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 06:43:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:14,787 INFO L93 Difference]: Finished difference Result 311 states and 349 transitions. [2021-05-06 06:43:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-05-06 06:43:14,788 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 06:43:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:14,788 INFO L225 Difference]: With dead ends: 311 [2021-05-06 06:43:14,788 INFO L226 Difference]: Without dead ends: 311 [2021-05-06 06:43:14,791 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10989 ImplicationChecksByTransitivity, 19606.9ms TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2021-05-06 06:43:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-05-06 06:43:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2021-05-06 06:43:14,792 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 06:43:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 347 transitions. [2021-05-06 06:43:14,793 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 347 transitions. Word has length 305 [2021-05-06 06:43:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:14,793 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 347 transitions. [2021-05-06 06:43:14,793 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 06:43:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 347 transitions. [2021-05-06 06:43:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-05-06 06:43:14,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:14,794 INFO L523 BasicCegarLoop]: trace histogram [148, 112, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:14,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-06 06:43:14,994 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:14,995 INFO L82 PathProgramCache]: Analyzing trace with hash 928752663, now seen corresponding path program 109 times [2021-05-06 06:43:14,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:14,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62095255] [2021-05-06 06:43:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:19,524 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 06:43:19,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:19,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62095255] [2021-05-06 06:43:19,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62095255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:19,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104492508] [2021-05-06 06:43:19,524 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 06:43:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:19,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-06 06:43:19,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:20,066 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 06:43:20,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104492508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:20,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:20,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 117 [2021-05-06 06:43:20,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499998330] [2021-05-06 06:43:20,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-06 06:43:20,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:20,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-06 06:43:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2021-05-06 06:43:20,068 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 06:43:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:27,860 INFO L93 Difference]: Finished difference Result 312 states and 349 transitions. [2021-05-06 06:43:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-06 06:43:27,860 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 06:43:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:27,861 INFO L225 Difference]: With dead ends: 312 [2021-05-06 06:43:27,861 INFO L226 Difference]: Without dead ends: 312 [2021-05-06 06:43:27,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 11811.1ms TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2021-05-06 06:43:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-06 06:43:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-05-06 06:43:27,864 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 06:43:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 349 transitions. [2021-05-06 06:43:27,864 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 349 transitions. Word has length 309 [2021-05-06 06:43:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:27,864 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 349 transitions. [2021-05-06 06:43:27,864 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 06:43:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 349 transitions. [2021-05-06 06:43:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-06 06:43:27,865 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:27,865 INFO L523 BasicCegarLoop]: trace histogram [149, 113, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:28,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-06 06:43:28,066 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1326531213, now seen corresponding path program 110 times [2021-05-06 06:43:28,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:28,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244548571] [2021-05-06 06:43:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:32,610 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 06:43:32,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:32,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244548571] [2021-05-06 06:43:32,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244548571] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:32,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215537295] [2021-05-06 06:43:32,610 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 06:43:32,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:43:32,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:32,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-06 06:43:32,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:32,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:33,147 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 06:43:33,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215537295] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:33,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:33,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 118 [2021-05-06 06:43:33,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535905724] [2021-05-06 06:43:33,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 06:43:33,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:33,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 06:43:33,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:43:33,149 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 06:43:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:41,180 INFO L93 Difference]: Finished difference Result 314 states and 351 transitions. [2021-05-06 06:43:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-06 06:43:41,181 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 06:43:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:41,181 INFO L225 Difference]: With dead ends: 314 [2021-05-06 06:43:41,181 INFO L226 Difference]: Without dead ends: 314 [2021-05-06 06:43:41,183 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 11947.0ms TimeCoverageRelationStatistics Valid=20127, Invalid=33465, Unknown=0, NotChecked=0, Total=53592 [2021-05-06 06:43:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-05-06 06:43:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-05-06 06:43:41,185 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 06:43:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 351 transitions. [2021-05-06 06:43:41,185 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 351 transitions. Word has length 311 [2021-05-06 06:43:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:41,185 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 351 transitions. [2021-05-06 06:43:41,185 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 06:43:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 351 transitions. [2021-05-06 06:43:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-05-06 06:43:41,186 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:41,186 INFO L523 BasicCegarLoop]: trace histogram [150, 114, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:41,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-06 06:43:41,387 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash 304148431, now seen corresponding path program 111 times [2021-05-06 06:43:41,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:41,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735716520] [2021-05-06 06:43:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:46,013 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 06:43:46,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:46,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735716520] [2021-05-06 06:43:46,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735716520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:46,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580673386] [2021-05-06 06:43:46,013 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 06:43:46,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 74 check-sat command(s) [2021-05-06 06:43:46,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:46,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:43:46,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:46,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:46,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:47,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:48,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:49,879 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 06:43:49,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580673386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:49,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:49,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 39] total 155 [2021-05-06 06:43:49,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930359867] [2021-05-06 06:43:49,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states [2021-05-06 06:43:49,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2021-05-06 06:43:49,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:43:49,882 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)