/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_13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:48:56,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:48:56,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:48:56,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:48:56,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:48:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:48:56,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:48:56,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:48:56,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:48:56,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:48:56,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:48:56,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:48:56,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:48:56,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:48:56,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:48:56,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:48:56,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:48:56,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:48:56,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:48:56,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:48:56,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:48:56,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:48:56,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:48:56,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:48:56,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:48:56,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:48:56,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:48:56,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:48:56,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:48:56,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:48:56,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:48:56,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:48:56,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:48:56,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:48:56,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:48:56,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:48:56,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:48:56,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:48:56,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:48:56,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:48:56,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:48:56,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:48:56,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:48:56,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:48:56,540 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:48:56,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:48:56,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:48:56,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:48:56,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:48:56,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:48:56,783 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:48:56,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2021-05-02 18:48:56,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6296b7c63/25d123751a8f4c72a0feb31a8a169f3a/FLAG3cb9ba191 [2021-05-02 18:48:57,168 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:48:57,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2021-05-02 18:48:57,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6296b7c63/25d123751a8f4c72a0feb31a8a169f3a/FLAG3cb9ba191 [2021-05-02 18:48:57,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6296b7c63/25d123751a8f4c72a0feb31a8a169f3a [2021-05-02 18:48:57,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:48:57,191 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:48:57,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:48:57,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:48:57,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:48:57,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4b89e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57, skipping insertion in model container [2021-05-02 18:48:57,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:48:57,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:48:57,325 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_13.c[319,332] [2021-05-02 18:48:57,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:48:57,347 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:48:57,355 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_13.c[319,332] [2021-05-02 18:48:57,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:48:57,369 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:48:57,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57 WrapperNode [2021-05-02 18:48:57,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:48:57,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:48:57,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:48:57,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:48:57,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:48:57,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:48:57,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:48:57,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:48:57,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (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 [2021-05-02 18:48:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:48:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:48:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:48:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:48:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:48:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:48:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:48:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:48:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:48:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:48:57,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:48:57,680 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:48:57,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:48:57 BoogieIcfgContainer [2021-05-02 18:48:57,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:48:57,682 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:48:57,682 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:48:57,682 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:48:57,684 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:48:57" (1/1) ... [2021-05-02 18:48:57,730 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~z~0_1 v_main_~y~0_2) InVars {main_~y~0=v_main_~y~0_2, main_~z~0=v_main_~z~0_1} OutVars{main_~y~0=v_main_~y~0_2, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[] [2021-05-02 18:48:57,756 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 83.8 percent of original size [2021-05-02 18:48:57,874 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 83.8 percent of original size 57 [2021-05-02 18:48:57,900 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< v_main_~z~0_1 v_main_~y~0_2) (= (+ v_main_~y~0_1 1) v_main_~y~0_2) (= v_main_~x~0_3 (+ v_main_~x~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_1, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] with Formula: (or (let ((.cse0 (+ v_itFin_1 v_main_~z~0_1))) (and (= v_main_~x~0_3 (+ v_itFin_1 v_main_~x~0_2)) (<= v_main_~y~0_2 .cse0) (< v_main_~z~0_1 v_main_~y~0_2) (= v_main_~y~0_2 (+ v_itFin_1 v_main_~y~0_1)) (< .cse0 (+ v_main_~y~0_2 1)))) (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post9_3| |v_main_#t~post9_1|) (= v_itFin_1 0) (= |v_main_#t~post8_3| |v_main_#t~post8_1|) (<= v_main_~y~0_2 v_main_~z~0_1))) InVars {main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_3, main_#t~post8=|v_main_#t~post8_3|, main_#t~post9=|v_main_#t~post9_3|, main_~z~0=v_main_~z~0_1} OutVars{main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_2, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|, main_~z~0=v_main_~z~0_1} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] [2021-05-02 18:48:57,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:48:57 BasicIcfg [2021-05-02 18:48:57,906 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:48:57,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:48:57,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:48:57,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:48:57,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:48:57" (1/4) ... [2021-05-02 18:48:57,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529099ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:48:57, skipping insertion in model container [2021-05-02 18:48:57,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:48:57" (2/4) ... [2021-05-02 18:48:57,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529099ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:48:57, skipping insertion in model container [2021-05-02 18:48:57,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:48:57" (3/4) ... [2021-05-02 18:48:57,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529099ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:48:57, skipping insertion in model container [2021-05-02 18:48:57,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:48:57" (4/4) ... [2021-05-02 18:48:57,911 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.cJordan [2021-05-02 18:48:57,914 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:48:57,916 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:48:57,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:48:57,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:48:57,937 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:48:57,937 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:48:57,937 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:48:57,937 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:48:57,937 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:48:57,937 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:48:57,937 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:48:57,945 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) [2021-05-02 18:48:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:48:57,949 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:57,949 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:57,950 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-02 18:48:57,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:57,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49357517] [2021-05-02 18:48:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:48:58,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:58,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49357517] [2021-05-02 18:48:58,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49357517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:48:58,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:48:58,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:48:58,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94739945] [2021-05-02 18:48:58,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:48:58,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:48:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:48:58,080 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) [2021-05-02 18:48:58,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:58,107 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 18:48:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:48:58,109 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 [2021-05-02 18:48:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:58,113 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:48:58,113 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:48:58,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:48:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:48:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:48:58,155 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) [2021-05-02 18:48:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-02 18:48:58,157 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-02 18:48:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:58,157 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-02 18:48:58,158 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) [2021-05-02 18:48:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-02 18:48:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:48:58,158 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:58,158 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:58,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:48:58,159 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:58,160 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-02 18:48:58,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:58,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984758148] [2021-05-02 18:48:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:48:58,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:58,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984758148] [2021-05-02 18:48:58,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984758148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:48:58,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:48:58,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:48:58,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882810349] [2021-05-02 18:48:58,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:48:58,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:48:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:48:58,281 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) [2021-05-02 18:48:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:58,326 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-02 18:48:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:48:58,327 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 [2021-05-02 18:48:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:58,327 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:48:58,328 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:48:58,328 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:48:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:48:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:48:58,332 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) [2021-05-02 18:48:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 18:48:58,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-02 18:48:58,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:58,335 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 18:48:58,335 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) [2021-05-02 18:48:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 18:48:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:48:58,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:58,335 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:58,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:48:58,336 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:58,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-02 18:48:58,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:58,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862051954] [2021-05-02 18:48:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:58,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:58,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862051954] [2021-05-02 18:48:58,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862051954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:48:58,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:48:58,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:48:58,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562825560] [2021-05-02 18:48:58,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:48:58,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:48:58,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:48:58,408 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) [2021-05-02 18:48:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:58,467 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-02 18:48:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:48:58,467 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 [2021-05-02 18:48:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:58,468 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:48:58,468 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:48:58,468 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:48:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:48:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:48:58,469 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) [2021-05-02 18:48:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 18:48:58,470 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-02 18:48:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:58,470 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 18:48:58,470 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) [2021-05-02 18:48:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 18:48:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:48:58,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:58,471 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:58,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:48:58,471 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-02 18:48:58,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:58,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290565186] [2021-05-02 18:48:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:58,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:58,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290565186] [2021-05-02 18:48:58,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290565186] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:58,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227333739] [2021-05-02 18:48:58,542 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 [2021-05-02 18:48:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:58,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:48:58,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:58,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:58,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227333739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:58,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:58,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:48:58,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24811977] [2021-05-02 18:48:58,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:48:58,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:48:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:48:58,659 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) [2021-05-02 18:48:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:58,737 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:48:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:48:58,738 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 [2021-05-02 18:48:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:58,738 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:48:58,738 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:48:58,739 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:48:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:48:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 18:48:58,740 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) [2021-05-02 18:48:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 18:48:58,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-02 18:48:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:58,741 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 18:48:58,741 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) [2021-05-02 18:48:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 18:48:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:48:58,742 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:58,742 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:58,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:48:58,959 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:58,960 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-02 18:48:58,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:58,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606489201] [2021-05-02 18:48:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 18:48:59,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:59,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606489201] [2021-05-02 18:48:59,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606489201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:48:59,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:48:59,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:48:59,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313767391] [2021-05-02 18:48:59,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:48:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:48:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:48:59,017 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) [2021-05-02 18:48:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:59,067 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-02 18:48:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:48:59,067 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 [2021-05-02 18:48:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:59,068 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:48:59,068 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:48:59,068 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:48:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:48:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:48:59,072 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) [2021-05-02 18:48:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-02 18:48:59,076 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-02 18:48:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:59,076 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-02 18:48:59,076 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) [2021-05-02 18:48:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-02 18:48:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:48:59,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:59,077 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:59,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 18:48:59,081 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:59,081 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-02 18:48:59,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:59,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140163769] [2021-05-02 18:48:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:59,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:59,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140163769] [2021-05-02 18:48:59,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140163769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:59,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537486903] [2021-05-02 18:48:59,143 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 [2021-05-02 18:48:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:48:59,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:59,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537486903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:59,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:59,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:48:59,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694198476] [2021-05-02 18:48:59,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:48:59,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:48:59,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:48:59,250 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) [2021-05-02 18:48:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:59,341 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:48:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:48:59,341 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 [2021-05-02 18:48:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:59,342 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:48:59,342 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:48:59,343 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:48:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:48:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:48:59,346 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) [2021-05-02 18:48:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 18:48:59,347 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-02 18:48:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:59,347 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 18:48:59,347 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) [2021-05-02 18:48:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 18:48:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:48:59,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:59,348 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:59,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:48:59,557 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-02 18:48:59,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:59,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797474598] [2021-05-02 18:48:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:59,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:59,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797474598] [2021-05-02 18:48:59,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797474598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:59,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263321633] [2021-05-02 18:48:59,611 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 [2021-05-02 18:48:59,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:48:59,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:48:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:48:59,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:59,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:48:59,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263321633] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:59,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:59,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:48:59,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451294106] [2021-05-02 18:48:59,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:48:59,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:48:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:48:59,713 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) [2021-05-02 18:48:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:59,843 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:48:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:48:59,843 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 [2021-05-02 18:48:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:59,844 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:48:59,844 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:48:59,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:48:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:48:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 18:48:59,849 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) [2021-05-02 18:48:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 18:48:59,850 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 18:48:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:59,850 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 18:48:59,850 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) [2021-05-02 18:48:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 18:48:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:48:59,850 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:59,850 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:00,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:00,051 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-02 18:49:00,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:00,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598770355] [2021-05-02 18:49:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:00,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:49:00,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:00,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598770355] [2021-05-02 18:49:00,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598770355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:00,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262366311] [2021-05-02 18:49:00,117 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 [2021-05-02 18:49:00,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:49:00,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:00,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:49:00,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 18:49:00,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262366311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:00,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:00,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-02 18:49:00,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674342944] [2021-05-02 18:49:00,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:49:00,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:00,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:49:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:49:00,216 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) [2021-05-02 18:49:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:00,380 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 18:49:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:49:00,380 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 [2021-05-02 18:49:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:00,383 INFO L225 Difference]: With dead ends: 29 [2021-05-02 18:49:00,383 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:49:00,383 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:49:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:49:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:49:00,386 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) [2021-05-02 18:49:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 18:49:00,387 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 18:49:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:00,387 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 18:49:00,387 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) [2021-05-02 18:49:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 18:49:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:49:00,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:00,388 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:00,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:00,607 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-02 18:49:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:00,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097883732] [2021-05-02 18:49:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:00,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:00,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097883732] [2021-05-02 18:49:00,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097883732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:00,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295410651] [2021-05-02 18:49:00,669 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 [2021-05-02 18:49:00,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:00,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:00,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:49:00,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:00,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295410651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:00,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:00,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:49:00,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104935211] [2021-05-02 18:49:00,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:49:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:49:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:49:00,774 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) [2021-05-02 18:49:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:00,946 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 18:49:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:49:00,946 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 [2021-05-02 18:49:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:00,947 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:49:00,947 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:49:00,947 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:49:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:49:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:49:00,948 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) [2021-05-02 18:49:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 18:49:00,949 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 18:49:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:00,949 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 18:49:00,949 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) [2021-05-02 18:49:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 18:49:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:49:00,950 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:00,950 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:01,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:01,153 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-02 18:49:01,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:01,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83519674] [2021-05-02 18:49:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:01,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:01,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83519674] [2021-05-02 18:49:01,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83519674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:01,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512466807] [2021-05-02 18:49:01,217 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 [2021-05-02 18:49:01,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-02 18:49:01,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:49:01,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:01,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:01,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512466807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:01,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:01,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:49:01,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269257995] [2021-05-02 18:49:01,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:49:01,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:49:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:49:01,332 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) [2021-05-02 18:49:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:01,517 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 18:49:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:49:01,518 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 [2021-05-02 18:49:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:01,518 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:49:01,518 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:49:01,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 155.3ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:49:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:49:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:49:01,520 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) [2021-05-02 18:49:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 18:49:01,520 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 18:49:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:01,521 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 18:49:01,521 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) [2021-05-02 18:49:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 18:49:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:49:01,521 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:01,521 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:01,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:01,725 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-02 18:49:01,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:01,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236226330] [2021-05-02 18:49:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:01,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:01,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236226330] [2021-05-02 18:49:01,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236226330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:01,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394279586] [2021-05-02 18:49:01,818 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 [2021-05-02 18:49:01,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:49:01,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:01,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:49:01,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:49:01,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394279586] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:01,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:01,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-02 18:49:01,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417483058] [2021-05-02 18:49:01,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:49:01,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:49:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:49:01,983 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) [2021-05-02 18:49:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:02,252 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 18:49:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:49:02,252 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 [2021-05-02 18:49:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:02,253 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:49:02,253 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:49:02,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 268.4ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:49:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:49:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:49:02,254 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) [2021-05-02 18:49:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 18:49:02,255 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-02 18:49:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:02,255 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 18:49:02,255 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) [2021-05-02 18:49:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 18:49:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:49:02,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:02,256 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:02,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:02,461 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-02 18:49:02,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:02,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976159134] [2021-05-02 18:49:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:02,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:02,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976159134] [2021-05-02 18:49:02,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976159134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:02,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155274339] [2021-05-02 18:49:02,570 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 [2021-05-02 18:49:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:02,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:49:02,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:02,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:02,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155274339] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:02,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:02,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:49:02,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768380983] [2021-05-02 18:49:02,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:49:02,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:02,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:49:02,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:49:02,678 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) [2021-05-02 18:49:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:02,997 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 18:49:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:49:02,998 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 [2021-05-02 18:49:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:02,999 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:49:02,999 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 18:49:02,999 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 298.2ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:49:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 18:49:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 18:49:03,001 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) [2021-05-02 18:49:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 18:49:03,001 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-02 18:49:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:03,001 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 18:49:03,001 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) [2021-05-02 18:49:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 18:49:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:49:03,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:03,002 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:03,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 18:49:03,213 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:03,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-02 18:49:03,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:03,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114406623] [2021-05-02 18:49:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:03,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:03,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114406623] [2021-05-02 18:49:03,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114406623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:03,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400913643] [2021-05-02 18:49:03,308 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 [2021-05-02 18:49:03,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:03,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:03,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:49:03,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:03,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:03,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400913643] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:03,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:03,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:49:03,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879986351] [2021-05-02 18:49:03,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:49:03,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:03,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:49:03,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:49:03,474 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) [2021-05-02 18:49:03,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:03,818 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 18:49:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:49:03,819 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 [2021-05-02 18:49:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:03,819 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:49:03,819 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 18:49:03,820 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 333.2ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:49:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 18:49:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 18:49:03,822 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) [2021-05-02 18:49:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-02 18:49:03,822 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-02 18:49:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:03,822 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-02 18:49:03,822 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) [2021-05-02 18:49:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-02 18:49:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:49:03,823 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:03,823 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:04,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:04,024 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:04,024 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-02 18:49:04,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:04,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366181146] [2021-05-02 18:49:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:49:04,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:04,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366181146] [2021-05-02 18:49:04,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366181146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:04,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604477993] [2021-05-02 18:49:04,174 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 [2021-05-02 18:49:04,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:49:04,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:04,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:49:04,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:04,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-05-02 18:49:04,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604477993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:04,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:04,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-02 18:49:04,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156880088] [2021-05-02 18:49:04,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:49:04,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:49:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:49:04,320 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) [2021-05-02 18:49:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:04,809 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-02 18:49:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:49:04,809 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 [2021-05-02 18:49:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:04,809 INFO L225 Difference]: With dead ends: 47 [2021-05-02 18:49:04,810 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:49:04,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 529.0ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:49:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:49:04,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:49:04,812 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) [2021-05-02 18:49:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 18:49:04,812 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-02 18:49:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:04,812 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 18:49:04,812 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) [2021-05-02 18:49:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 18:49:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:49:04,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:04,813 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:05,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:05,021 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-02 18:49:05,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:05,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105316519] [2021-05-02 18:49:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:49:05,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:05,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105316519] [2021-05-02 18:49:05,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105316519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:05,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353618990] [2021-05-02 18:49:05,165 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 [2021-05-02 18:49:05,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:05,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:49:05,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:49:05,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353618990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:05,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:05,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:49:05,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936117649] [2021-05-02 18:49:05,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:49:05,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:49:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:49:05,283 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) [2021-05-02 18:49:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:05,673 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 18:49:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:49:05,674 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 [2021-05-02 18:49:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:05,674 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:49:05,674 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 18:49:05,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 403.9ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:49:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 18:49:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 18:49:05,677 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) [2021-05-02 18:49:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-02 18:49:05,677 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-02 18:49:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:05,677 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-02 18:49:05,677 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) [2021-05-02 18:49:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-02 18:49:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:49:05,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:05,678 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:05,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:49:05,881 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-02 18:49:05,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:05,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681244053] [2021-05-02 18:49:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:49:06,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:06,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681244053] [2021-05-02 18:49:06,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681244053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:06,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42964584] [2021-05-02 18:49:06,058 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 [2021-05-02 18:49:06,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:49:06,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:49:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:06,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:49:06,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42964584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:06,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:06,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:49:06,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383825449] [2021-05-02 18:49:06,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:49:06,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:49:06,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:49:06,190 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) [2021-05-02 18:49:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:06,601 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 18:49:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:49:06,601 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 [2021-05-02 18:49:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:06,602 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:49:06,602 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 18:49:06,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 446.9ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:49:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 18:49:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 18:49:06,604 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) [2021-05-02 18:49:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-02 18:49:06,605 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-02 18:49:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:06,605 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-02 18:49:06,605 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) [2021-05-02 18:49:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-02 18:49:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:49:06,605 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:06,606 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:06,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:49:06,815 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-02 18:49:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:06,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163027407] [2021-05-02 18:49:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:49:06,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:06,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163027407] [2021-05-02 18:49:06,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163027407] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:06,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896867015] [2021-05-02 18:49:06,973 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 [2021-05-02 18:49:07,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:49:07,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:07,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:49:07,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-02 18:49:07,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896867015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:07,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:07,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-02 18:49:07,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179440866] [2021-05-02 18:49:07,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:49:07,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:49:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:49:07,153 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) [2021-05-02 18:49:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:07,693 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-02 18:49:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:49:07,694 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 [2021-05-02 18:49:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:07,694 INFO L225 Difference]: With dead ends: 55 [2021-05-02 18:49:07,694 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:49:07,695 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 638.6ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:49:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:49:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:49:07,698 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) [2021-05-02 18:49:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 18:49:07,698 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-02 18:49:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:07,698 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 18:49:07,699 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) [2021-05-02 18:49:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 18:49:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:49:07,699 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:07,699 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:07,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:49:07,901 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:07,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-02 18:49:07,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:07,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889467785] [2021-05-02 18:49:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:49:08,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:08,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889467785] [2021-05-02 18:49:08,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889467785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:08,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109152033] [2021-05-02 18:49:08,082 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 [2021-05-02 18:49:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:08,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:49:08,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:08,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:49:08,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109152033] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:08,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:08,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:49:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552252946] [2021-05-02 18:49:08,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:49:08,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:08,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:49:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:49:08,220 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) [2021-05-02 18:49:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:08,673 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-02 18:49:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:49:08,674 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 [2021-05-02 18:49:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:08,674 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:49:08,674 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 18:49:08,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 483.6ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:49:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 18:49:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 18:49:08,677 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) [2021-05-02 18:49:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 18:49:08,677 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-02 18:49:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:08,677 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 18:49:08,677 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) [2021-05-02 18:49:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 18:49:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:49:08,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:08,678 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:08,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:08,889 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-02 18:49:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:08,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413822459] [2021-05-02 18:49:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:49:09,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:09,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413822459] [2021-05-02 18:49:09,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413822459] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:09,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484119545] [2021-05-02 18:49:09,094 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 [2021-05-02 18:49:09,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:09,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:09,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:49:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:49:09,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484119545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:09,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:09,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:49:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505898811] [2021-05-02 18:49:09,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:49:09,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:09,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:49:09,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:49:09,222 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) [2021-05-02 18:49:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:09,706 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-02 18:49:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:49:09,706 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 [2021-05-02 18:49:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:09,707 INFO L225 Difference]: With dead ends: 58 [2021-05-02 18:49:09,707 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 18:49:09,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 570.2ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:49:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 18:49:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 18:49:09,709 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) [2021-05-02 18:49:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-02 18:49:09,709 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-02 18:49:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:09,709 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-02 18:49:09,709 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) [2021-05-02 18:49:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-02 18:49:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:49:09,710 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:09,710 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:09,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:09,917 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-02 18:49:09,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:09,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858080093] [2021-05-02 18:49:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:49:10,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:10,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858080093] [2021-05-02 18:49:10,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858080093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:10,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232722703] [2021-05-02 18:49:10,129 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 [2021-05-02 18:49:10,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:49:10,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:10,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:49:10,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:10,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-05-02 18:49:10,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232722703] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:10,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:10,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-02 18:49:10,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076757838] [2021-05-02 18:49:10,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:49:10,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:49:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:49:10,346 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) [2021-05-02 18:49:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:11,133 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-02 18:49:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:49:11,133 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 [2021-05-02 18:49:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:11,134 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:49:11,134 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:49:11,135 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 884.7ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:49:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:49:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:49:11,136 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) [2021-05-02 18:49:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 18:49:11,137 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-02 18:49:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:11,137 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 18:49:11,137 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) [2021-05-02 18:49:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 18:49:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:49:11,138 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:11,138 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:11,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:11,341 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-02 18:49:11,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:11,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076272120] [2021-05-02 18:49:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:49:11,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:11,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076272120] [2021-05-02 18:49:11,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076272120] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:11,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979915352] [2021-05-02 18:49:11,530 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 [2021-05-02 18:49:11,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:11,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:11,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:49:11,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:11,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:49:11,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979915352] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:11,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:11,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:49:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385116251] [2021-05-02 18:49:11,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:49:11,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:49:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:49:11,686 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) [2021-05-02 18:49:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:12,258 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-02 18:49:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:49:12,259 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 [2021-05-02 18:49:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:12,259 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:49:12,259 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 18:49:12,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 607.9ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:49:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 18:49:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 18:49:12,261 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) [2021-05-02 18:49:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-02 18:49:12,262 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-02 18:49:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:12,262 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-02 18:49:12,262 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) [2021-05-02 18:49:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-02 18:49:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:49:12,263 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:12,263 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:12,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:49:12,466 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-02 18:49:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:12,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339216503] [2021-05-02 18:49:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:49:12,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:12,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339216503] [2021-05-02 18:49:12,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339216503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:12,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087918144] [2021-05-02 18:49:12,717 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 [2021-05-02 18:49:12,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 18:49:12,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:12,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:49:12,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:12,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:49:12,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087918144] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:12,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:12,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:49:12,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153975249] [2021-05-02 18:49:12,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:49:12,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:49:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:49:12,861 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) [2021-05-02 18:49:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:13,490 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-02 18:49:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:49:13,492 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 [2021-05-02 18:49:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:13,492 INFO L225 Difference]: With dead ends: 66 [2021-05-02 18:49:13,492 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 18:49:13,493 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 725.6ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:49:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 18:49:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 18:49:13,494 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) [2021-05-02 18:49:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-02 18:49:13,495 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-02 18:49:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:13,495 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-02 18:49:13,495 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) [2021-05-02 18:49:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-02 18:49:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:49:13,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:13,495 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:13,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:49:13,701 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:13,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-02 18:49:13,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:13,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727873439] [2021-05-02 18:49:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:49:13,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:13,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727873439] [2021-05-02 18:49:13,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727873439] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:13,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418946264] [2021-05-02 18:49:13,930 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 [2021-05-02 18:49:13,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:49:13,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:13,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:49:13,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-05-02 18:49:14,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418946264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:14,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:14,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-02 18:49:14,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289518346] [2021-05-02 18:49:14,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:49:14,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:14,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:49:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:49:14,179 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) [2021-05-02 18:49:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:15,057 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-02 18:49:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:49:15,057 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 [2021-05-02 18:49:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:15,058 INFO L225 Difference]: With dead ends: 71 [2021-05-02 18:49:15,058 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:49:15,059 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1066.4ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:49:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:49:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:49:15,060 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) [2021-05-02 18:49:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 18:49:15,060 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-02 18:49:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:15,061 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 18:49:15,061 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) [2021-05-02 18:49:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 18:49:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:49:15,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:15,061 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:15,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:49:15,265 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-02 18:49:15,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:15,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701840989] [2021-05-02 18:49:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:49:15,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:15,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701840989] [2021-05-02 18:49:15,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701840989] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:15,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429430868] [2021-05-02 18:49:15,529 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 [2021-05-02 18:49:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:15,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:49:15,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:15,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:49:15,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429430868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:15,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:15,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:49:15,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248830571] [2021-05-02 18:49:15,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:49:15,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:49:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:49:15,698 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) [2021-05-02 18:49:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:16,378 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 18:49:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:49:16,379 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 [2021-05-02 18:49:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:16,379 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:49:16,379 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 18:49:16,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 759.7ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:49:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 18:49:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 18:49:16,381 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) [2021-05-02 18:49:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-02 18:49:16,381 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-02 18:49:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:16,382 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-02 18:49:16,382 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) [2021-05-02 18:49:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-02 18:49:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:49:16,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:16,382 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:16,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:49:16,590 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:16,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-02 18:49:16,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:16,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212156157] [2021-05-02 18:49:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:49:16,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212156157] [2021-05-02 18:49:16,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212156157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941692064] [2021-05-02 18:49:16,887 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 [2021-05-02 18:49:16,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:16,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:49:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:16,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:49:17,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941692064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:17,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:17,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:49:17,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063998900] [2021-05-02 18:49:17,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:49:17,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:49:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:49:17,049 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) [2021-05-02 18:49:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:17,799 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-02 18:49:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:49:17,800 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 [2021-05-02 18:49:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:17,800 INFO L225 Difference]: With dead ends: 74 [2021-05-02 18:49:17,800 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 18:49:17,801 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 871.6ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:49:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 18:49:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 18:49:17,803 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) [2021-05-02 18:49:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 18:49:17,803 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-02 18:49:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:17,804 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 18:49:17,804 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) [2021-05-02 18:49:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 18:49:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:49:17,804 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:17,804 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:18,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:49:18,005 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:18,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-02 18:49:18,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:18,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601303056] [2021-05-02 18:49:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:49:18,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:18,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601303056] [2021-05-02 18:49:18,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601303056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:18,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822434367] [2021-05-02 18:49:18,284 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 [2021-05-02 18:49:18,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:49:18,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:18,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:49:18,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:18,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-05-02 18:49:18,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822434367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:18,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:18,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-02 18:49:18,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727071584] [2021-05-02 18:49:18,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:49:18,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:18,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:49:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:49:18,602 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) [2021-05-02 18:49:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:19,748 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-02 18:49:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:49:19,749 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 [2021-05-02 18:49:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:19,749 INFO L225 Difference]: With dead ends: 79 [2021-05-02 18:49:19,749 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:49:19,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1388.4ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:49:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:49:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:49:19,752 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) [2021-05-02 18:49:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 18:49:19,752 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-02 18:49:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:19,752 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 18:49:19,752 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) [2021-05-02 18:49:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 18:49:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:49:19,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:19,753 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:19,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:19,957 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:19,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-02 18:49:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:19,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214961269] [2021-05-02 18:49:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:49:20,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:20,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214961269] [2021-05-02 18:49:20,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214961269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:20,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339855214] [2021-05-02 18:49:20,259 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 [2021-05-02 18:49:20,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:20,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:49:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:20,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:49:20,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339855214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:20,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:20,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:49:20,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492902856] [2021-05-02 18:49:20,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:49:20,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:20,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:49:20,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:49:20,438 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) [2021-05-02 18:49:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:21,259 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-02 18:49:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:49:21,259 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 [2021-05-02 18:49:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:21,260 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:49:21,260 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:49:21,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 937.0ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:49:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:49:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:49:21,262 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) [2021-05-02 18:49:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-02 18:49:21,262 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-02 18:49:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:21,262 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-02 18:49:21,262 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) [2021-05-02 18:49:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-02 18:49:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:49:21,263 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:21,263 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:21,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:49:21,473 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:21,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-02 18:49:21,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:21,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348892227] [2021-05-02 18:49:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:49:21,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:21,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348892227] [2021-05-02 18:49:21,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348892227] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:21,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656983127] [2021-05-02 18:49:21,800 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 [2021-05-02 18:49:21,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 18:49:21,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:49:21,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:49:22,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656983127] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:22,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:22,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:49:22,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284252778] [2021-05-02 18:49:22,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:49:22,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:49:22,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:49:22,005 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) [2021-05-02 18:49:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:22,841 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-02 18:49:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:49:22,841 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 [2021-05-02 18:49:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:22,842 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:49:22,842 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 18:49:22,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 988.6ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:49:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 18:49:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 18:49:22,844 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) [2021-05-02 18:49:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-02 18:49:22,845 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-02 18:49:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:22,845 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-02 18:49:22,845 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) [2021-05-02 18:49:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-02 18:49:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:49:22,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:22,845 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:23,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:23,062 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-02 18:49:23,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:23,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088914975] [2021-05-02 18:49:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:49:23,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:23,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088914975] [2021-05-02 18:49:23,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088914975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:23,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058718291] [2021-05-02 18:49:23,399 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 [2021-05-02 18:49:23,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:49:23,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:23,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:49:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:23,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-05-02 18:49:23,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058718291] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:23,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:23,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-02 18:49:23,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107278323] [2021-05-02 18:49:23,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:49:23,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:49:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:49:23,760 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) [2021-05-02 18:49:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:25,007 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-02 18:49:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:49:25,007 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 [2021-05-02 18:49:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:25,008 INFO L225 Difference]: With dead ends: 87 [2021-05-02 18:49:25,008 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:49:25,009 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1578.0ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:49:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:49:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:49:25,010 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) [2021-05-02 18:49:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 18:49:25,010 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-02 18:49:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:25,011 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 18:49:25,011 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) [2021-05-02 18:49:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 18:49:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:49:25,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:25,011 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:25,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:49:25,225 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-02 18:49:25,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:25,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775610878] [2021-05-02 18:49:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:49:25,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:25,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775610878] [2021-05-02 18:49:25,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775610878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:25,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986788564] [2021-05-02 18:49:25,557 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 [2021-05-02 18:49:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:49:25,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:49:25,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986788564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:25,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:25,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:49:25,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953471713] [2021-05-02 18:49:25,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:49:25,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:25,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:49:25,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:49:25,732 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) [2021-05-02 18:49:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:26,628 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-02 18:49:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:49:26,628 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 [2021-05-02 18:49:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:26,629 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:49:26,629 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 18:49:26,630 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1064.0ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:49:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 18:49:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 18:49:26,631 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) [2021-05-02 18:49:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-02 18:49:26,632 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-02 18:49:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:26,632 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-02 18:49:26,632 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) [2021-05-02 18:49:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-02 18:49:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:49:26,632 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:26,632 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:26,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:26,842 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-02 18:49:26,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:26,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904251253] [2021-05-02 18:49:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:49:27,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:27,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904251253] [2021-05-02 18:49:27,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904251253] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:27,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551056475] [2021-05-02 18:49:27,222 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 [2021-05-02 18:49:27,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:27,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:27,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:49:27,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:27,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:49:27,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551056475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:27,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:27,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:49:27,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029459764] [2021-05-02 18:49:27,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:49:27,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:27,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:49:27,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:49:27,405 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) [2021-05-02 18:49:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:28,417 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-02 18:49:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:49:28,418 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 [2021-05-02 18:49:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:28,418 INFO L225 Difference]: With dead ends: 90 [2021-05-02 18:49:28,418 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 18:49:28,419 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1162.2ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:49:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 18:49:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 18:49:28,420 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) [2021-05-02 18:49:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-02 18:49:28,421 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-02 18:49:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:28,421 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-02 18:49:28,421 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) [2021-05-02 18:49:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-02 18:49:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:49:28,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:28,422 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:28,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:49:28,629 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:28,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-02 18:49:28,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:28,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259607848] [2021-05-02 18:49:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:49:29,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:29,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259607848] [2021-05-02 18:49:29,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259607848] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:29,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629484461] [2021-05-02 18:49:29,034 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 [2021-05-02 18:49:29,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:49:29,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:29,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:49:29,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:29,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-05-02 18:49:29,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629484461] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:29,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:29,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-02 18:49:29,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010530491] [2021-05-02 18:49:29,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:49:29,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:49:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:49:29,429 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) [2021-05-02 18:49:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:30,889 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-02 18:49:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:49:30,889 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 [2021-05-02 18:49:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:30,890 INFO L225 Difference]: With dead ends: 95 [2021-05-02 18:49:30,890 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:49:30,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1888.7ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:49:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:49:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:49:30,892 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) [2021-05-02 18:49:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 18:49:30,892 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-02 18:49:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:30,892 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 18:49:30,892 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) [2021-05-02 18:49:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 18:49:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:49:30,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:30,893 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:31,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:31,101 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-02 18:49:31,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:31,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039727552] [2021-05-02 18:49:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:49:31,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:31,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039727552] [2021-05-02 18:49:31,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039727552] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:31,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510476847] [2021-05-02 18:49:31,524 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 [2021-05-02 18:49:31,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:31,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:31,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:49:31,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:49:31,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510476847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:31,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:31,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:49:31,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573906517] [2021-05-02 18:49:31,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:49:31,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:31,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:49:31,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:49:31,715 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) [2021-05-02 18:49:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:32,734 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-02 18:49:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:49:32,735 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 [2021-05-02 18:49:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:32,735 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:49:32,735 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 18:49:32,736 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1315.1ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:49:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 18:49:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 18:49:32,737 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) [2021-05-02 18:49:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-02 18:49:32,738 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-02 18:49:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:32,738 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-02 18:49:32,738 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) [2021-05-02 18:49:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-02 18:49:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:49:32,738 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:32,738 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:32,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:49:32,953 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-02 18:49:32,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:32,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599973162] [2021-05-02 18:49:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:49:33,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:33,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599973162] [2021-05-02 18:49:33,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599973162] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:33,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020561551] [2021-05-02 18:49:33,418 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 [2021-05-02 18:49:33,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:49:33,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:33,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:49:33,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:33,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:49:33,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020561551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:33,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:33,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:49:33,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228560793] [2021-05-02 18:49:33,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:49:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:49:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:49:33,666 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) [2021-05-02 18:49:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:34,802 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-02 18:49:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:49:34,803 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 [2021-05-02 18:49:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:34,803 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:49:34,803 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 18:49:34,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1369.4ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:49:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 18:49:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 18:49:34,805 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) [2021-05-02 18:49:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-02 18:49:34,806 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-02 18:49:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:34,806 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-02 18:49:34,806 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) [2021-05-02 18:49:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-02 18:49:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:49:34,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:34,806 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:35,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:35,017 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-02 18:49:35,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:35,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457581011] [2021-05-02 18:49:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:49:35,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:35,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457581011] [2021-05-02 18:49:35,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457581011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:35,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000765474] [2021-05-02 18:49:35,470 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 [2021-05-02 18:49:35,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:49:35,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:35,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:49:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:35,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-05-02 18:49:35,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000765474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:35,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:35,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-02 18:49:35,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470350806] [2021-05-02 18:49:35,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:49:35,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:35,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:49:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:49:35,945 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) [2021-05-02 18:49:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:37,619 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-02 18:49:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:49:37,620 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 [2021-05-02 18:49:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:37,620 INFO L225 Difference]: With dead ends: 103 [2021-05-02 18:49:37,620 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:49:37,621 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2186.7ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:49:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:49:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:49:37,622 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) [2021-05-02 18:49:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 18:49:37,623 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-02 18:49:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:37,623 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 18:49:37,623 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) [2021-05-02 18:49:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 18:49:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:49:37,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:37,624 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:37,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:49:37,835 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-02 18:49:37,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:37,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270063515] [2021-05-02 18:49:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:49:38,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:38,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270063515] [2021-05-02 18:49:38,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270063515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:38,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161565386] [2021-05-02 18:49:38,366 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 [2021-05-02 18:49:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:49:38,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:49:38,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161565386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:38,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:38,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:49:38,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452770703] [2021-05-02 18:49:38,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:49:38,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:38,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:49:38,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:49:38,563 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) [2021-05-02 18:49:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:39,719 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-02 18:49:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:49:39,719 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 [2021-05-02 18:49:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:39,720 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:49:39,720 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 18:49:39,720 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1533.4ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:49:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 18:49:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 18:49:39,722 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) [2021-05-02 18:49:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-02 18:49:39,722 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-02 18:49:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:39,723 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-02 18:49:39,723 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) [2021-05-02 18:49:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-02 18:49:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:49:39,723 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:39,723 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:39,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:49:39,934 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-02 18:49:39,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:39,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268099692] [2021-05-02 18:49:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:49:40,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:40,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268099692] [2021-05-02 18:49:40,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268099692] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:40,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907445954] [2021-05-02 18:49:40,449 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 [2021-05-02 18:49:40,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:40,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:40,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:49:40,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:40,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:49:40,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907445954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:40,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:40,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:49:40,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363565347] [2021-05-02 18:49:40,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:49:40,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:49:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:49:40,643 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) [2021-05-02 18:49:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:41,898 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-02 18:49:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:49:41,898 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 [2021-05-02 18:49:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:41,899 INFO L225 Difference]: With dead ends: 106 [2021-05-02 18:49:41,899 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 18:49:41,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1543.2ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:49:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 18:49:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 18:49:41,901 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) [2021-05-02 18:49:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-02 18:49:41,901 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-02 18:49:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:41,902 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-02 18:49:41,902 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) [2021-05-02 18:49:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-02 18:49:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:49:41,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:41,902 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:42,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:49:42,117 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:42,117 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-02 18:49:42,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:42,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278222219] [2021-05-02 18:49:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:49:42,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:42,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278222219] [2021-05-02 18:49:42,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278222219] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:42,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109912053] [2021-05-02 18:49:42,673 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 [2021-05-02 18:49:42,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:49:42,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:42,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:49:42,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:42,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2021-05-02 18:49:43,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109912053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:43,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:43,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-02 18:49:43,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115558184] [2021-05-02 18:49:43,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:49:43,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:49:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:49:43,185 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) [2021-05-02 18:49:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:45,134 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-02 18:49:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:49:45,135 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 [2021-05-02 18:49:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:45,135 INFO L225 Difference]: With dead ends: 111 [2021-05-02 18:49:45,135 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:49:45,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2589.0ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:49:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:49:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:49:45,137 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) [2021-05-02 18:49:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 18:49:45,138 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-02 18:49:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:45,138 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 18:49:45,138 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) [2021-05-02 18:49:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 18:49:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:49:45,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:45,139 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:45,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:49:45,339 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:45,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-02 18:49:45,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:45,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912201283] [2021-05-02 18:49:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:49:45,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:45,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912201283] [2021-05-02 18:49:45,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912201283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:45,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581511296] [2021-05-02 18:49:45,903 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 [2021-05-02 18:49:45,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:49:45,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:45,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:49:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:49:46,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581511296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:46,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:46,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:49:46,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111764464] [2021-05-02 18:49:46,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:49:46,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:49:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:49:46,124 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) [2021-05-02 18:49:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:47,479 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-02 18:49:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:49:47,480 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 [2021-05-02 18:49:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:47,480 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:49:47,480 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 18:49:47,481 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1691.0ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:49:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 18:49:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 18:49:47,482 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) [2021-05-02 18:49:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-02 18:49:47,483 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-02 18:49:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:47,483 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-02 18:49:47,483 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) [2021-05-02 18:49:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-02 18:49:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:49:47,484 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:47,484 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:47,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:49:47,689 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-02 18:49:47,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:47,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743645903] [2021-05-02 18:49:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:49:48,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:48,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743645903] [2021-05-02 18:49:48,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743645903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:48,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849945338] [2021-05-02 18:49:48,254 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 [2021-05-02 18:49:48,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-02 18:49:48,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:48,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:49:48,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:49:48,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849945338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:48,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:48,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:49:48,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987170424] [2021-05-02 18:49:48,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:49:48,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:49:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:49:48,497 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) [2021-05-02 18:49:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:49,868 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-02 18:49:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:49:49,868 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 [2021-05-02 18:49:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:49,869 INFO L225 Difference]: With dead ends: 114 [2021-05-02 18:49:49,869 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 18:49:49,869 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1784.2ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:49:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 18:49:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-02 18:49:49,871 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) [2021-05-02 18:49:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-02 18:49:49,871 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-02 18:49:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:49,871 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-02 18:49:49,871 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) [2021-05-02 18:49:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-02 18:49:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:49:49,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:49,872 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:50,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:49:50,082 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:50,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:50,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-02 18:49:50,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:50,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946596493] [2021-05-02 18:49:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:49:50,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:50,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946596493] [2021-05-02 18:49:50,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946596493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:50,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952605297] [2021-05-02 18:49:50,711 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 [2021-05-02 18:49:50,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:49:50,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:50,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:49:50,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:50,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:50,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2021-05-02 18:49:51,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952605297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:51,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:51,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-02 18:49:51,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104822227] [2021-05-02 18:49:51,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:49:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:49:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:49:51,310 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) [2021-05-02 18:49:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:53,453 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-02 18:49:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:49:53,453 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 [2021-05-02 18:49:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:53,454 INFO L225 Difference]: With dead ends: 119 [2021-05-02 18:49:53,454 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:49:53,454 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2900.5ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:49:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:49:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:49:53,456 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) [2021-05-02 18:49:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 18:49:53,457 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-02 18:49:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:53,457 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 18:49:53,457 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) [2021-05-02 18:49:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 18:49:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:49:53,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:53,457 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:53,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 18:49:53,673 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:53,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-02 18:49:53,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:53,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192233596] [2021-05-02 18:49:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:49:54,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:54,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192233596] [2021-05-02 18:49:54,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192233596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:54,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636144173] [2021-05-02 18:49:54,339 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 [2021-05-02 18:49:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:54,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:49:54,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:54,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:49:54,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636144173] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:54,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:54,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:49:54,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570234086] [2021-05-02 18:49:54,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:49:54,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:49:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:49:54,566 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) [2021-05-02 18:49:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:56,047 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-02 18:49:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:49:56,048 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 [2021-05-02 18:49:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:56,048 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:49:56,049 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 18:49:56,049 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1945.4ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:49:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 18:49:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 18:49:56,051 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) [2021-05-02 18:49:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-02 18:49:56,051 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-02 18:49:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:56,051 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-02 18:49:56,051 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) [2021-05-02 18:49:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-02 18:49:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:49:56,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:56,052 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:56,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:56,269 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:56,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-02 18:49:56,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:56,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077114849] [2021-05-02 18:49:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:49:56,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:56,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077114849] [2021-05-02 18:49:56,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077114849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:56,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100494214] [2021-05-02 18:49:56,958 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 [2021-05-02 18:49:57,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:49:57,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:57,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:49:57,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:57,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:49:57,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100494214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:57,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:57,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:49:57,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230103375] [2021-05-02 18:49:57,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:49:57,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:49:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:49:57,216 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) [2021-05-02 18:49:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:58,844 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-02 18:49:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:49:58,845 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 [2021-05-02 18:49:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:58,845 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:49:58,845 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 18:49:58,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2024.3ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:49:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 18:49:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 18:49:58,847 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) [2021-05-02 18:49:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-02 18:49:58,848 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-02 18:49:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:58,848 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-02 18:49:58,848 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) [2021-05-02 18:49:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-02 18:49:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:49:58,849 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:58,849 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:59,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:59,063 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-02 18:49:59,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:59,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250205802] [2021-05-02 18:49:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:49:59,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:59,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250205802] [2021-05-02 18:49:59,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250205802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:59,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739251553] [2021-05-02 18:49:59,821 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 [2021-05-02 18:49:59,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:49:59,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:59,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:49:59,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:59,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2021-05-02 18:50:00,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739251553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:00,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:00,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-02 18:50:00,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084103587] [2021-05-02 18:50:00,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:50:00,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:50:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:50:00,485 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) [2021-05-02 18:50:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:02,896 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-02 18:50:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:50:02,896 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 [2021-05-02 18:50:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:02,897 INFO L225 Difference]: With dead ends: 127 [2021-05-02 18:50:02,897 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:50:02,898 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3335.4ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:50:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:50:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:50:02,899 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) [2021-05-02 18:50:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 18:50:02,899 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-02 18:50:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:02,900 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 18:50:02,900 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) [2021-05-02 18:50:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 18:50:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:50:02,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:02,900 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:03,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:03,117 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-02 18:50:03,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:03,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013635188] [2021-05-02 18:50:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:50:03,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:03,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013635188] [2021-05-02 18:50:03,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013635188] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:03,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25071486] [2021-05-02 18:50:03,870 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 [2021-05-02 18:50:03,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:50:03,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:03,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:50:03,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:03,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:03,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:50:04,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25071486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:04,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:04,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:50:04,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162163265] [2021-05-02 18:50:04,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:50:04,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:50:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:50:04,142 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) [2021-05-02 18:50:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:05,819 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-02 18:50:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:50:05,820 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 [2021-05-02 18:50:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:05,821 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:50:05,821 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 18:50:05,821 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2185.0ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:50:05,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 18:50:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 18:50:05,823 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) [2021-05-02 18:50:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-02 18:50:05,823 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-02 18:50:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:05,823 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-02 18:50:05,823 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) [2021-05-02 18:50:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-02 18:50:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:50:05,824 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:05,824 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:06,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:50:06,033 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-02 18:50:06,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:06,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090386970] [2021-05-02 18:50:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:50:06,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:06,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090386970] [2021-05-02 18:50:06,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090386970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:06,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877765750] [2021-05-02 18:50:06,802 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 [2021-05-02 18:50:06,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-02 18:50:06,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:06,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:50:06,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:06,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:50:07,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877765750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:07,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:07,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:50:07,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680357644] [2021-05-02 18:50:07,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:50:07,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:50:07,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:50:07,058 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) [2021-05-02 18:50:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:08,800 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-02 18:50:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:50:08,801 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 [2021-05-02 18:50:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:08,802 INFO L225 Difference]: With dead ends: 130 [2021-05-02 18:50:08,802 INFO L226 Difference]: Without dead ends: 130 [2021-05-02 18:50:08,802 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2270.4ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:50:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-02 18:50:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-02 18:50:08,804 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) [2021-05-02 18:50:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-02 18:50:08,804 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-02 18:50:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:08,804 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-02 18:50:08,804 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) [2021-05-02 18:50:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-02 18:50:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:50:08,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:08,805 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:09,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:09,021 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-02 18:50:09,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:09,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639072610] [2021-05-02 18:50:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:50:09,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:09,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639072610] [2021-05-02 18:50:09,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639072610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:09,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837604154] [2021-05-02 18:50:09,871 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 [2021-05-02 18:50:09,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:50:09,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:09,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:50:09,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2021-05-02 18:50:10,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837604154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:10,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:10,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-02 18:50:10,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789694723] [2021-05-02 18:50:10,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:50:10,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:10,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:50:10,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:50:10,664 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) [2021-05-02 18:50:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:13,423 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-02 18:50:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:50:13,423 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 [2021-05-02 18:50:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:13,424 INFO L225 Difference]: With dead ends: 135 [2021-05-02 18:50:13,424 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:50:13,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3823.5ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:50:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:50:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:50:13,426 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) [2021-05-02 18:50:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 18:50:13,427 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-02 18:50:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:13,427 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 18:50:13,427 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) [2021-05-02 18:50:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 18:50:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:50:13,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:13,428 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:13,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:13,644 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:13,645 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-02 18:50:13,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:13,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24802677] [2021-05-02 18:50:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:50:14,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:14,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24802677] [2021-05-02 18:50:14,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24802677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:14,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412791803] [2021-05-02 18:50:14,530 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 [2021-05-02 18:50:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:50:14,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:50:14,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412791803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:14,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:14,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:50:14,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077432914] [2021-05-02 18:50:14,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:50:14,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:50:14,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:50:14,830 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) [2021-05-02 18:50:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:16,607 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-02 18:50:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:50:16,607 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 [2021-05-02 18:50:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:16,608 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:50:16,608 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 18:50:16,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2487.6ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:50:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 18:50:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-02 18:50:16,610 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) [2021-05-02 18:50:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-02 18:50:16,611 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-02 18:50:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:16,611 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-02 18:50:16,611 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) [2021-05-02 18:50:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-02 18:50:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:50:16,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:16,611 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:16,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:50:16,825 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-02 18:50:16,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:16,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693478636] [2021-05-02 18:50:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:17,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:50:17,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:17,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693478636] [2021-05-02 18:50:17,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693478636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:17,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661798734] [2021-05-02 18:50:17,701 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 [2021-05-02 18:50:17,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:50:17,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:17,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:50:17,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:50:17,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661798734] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:17,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:17,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:50:17,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908351902] [2021-05-02 18:50:17,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:50:17,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:17,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:50:17,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:50:17,960 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) [2021-05-02 18:50:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:19,969 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-02 18:50:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:50:19,970 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 [2021-05-02 18:50:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:19,970 INFO L225 Difference]: With dead ends: 138 [2021-05-02 18:50:19,970 INFO L226 Difference]: Without dead ends: 138 [2021-05-02 18:50:19,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2582.0ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:50:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-02 18:50:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-02 18:50:19,972 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) [2021-05-02 18:50:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-02 18:50:19,973 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-02 18:50:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:19,973 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-02 18:50:19,973 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) [2021-05-02 18:50:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-02 18:50:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:50:19,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:19,974 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:20,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:50:20,187 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:20,187 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-02 18:50:20,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:20,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918233603] [2021-05-02 18:50:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:50:21,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:21,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918233603] [2021-05-02 18:50:21,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918233603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:21,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686470044] [2021-05-02 18:50:21,105 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 [2021-05-02 18:50:21,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:50:21,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:50:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2021-05-02 18:50:21,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686470044] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:21,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:21,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-02 18:50:21,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721662530] [2021-05-02 18:50:21,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:50:21,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:50:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:50:21,943 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) [2021-05-02 18:50:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:24,980 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-02 18:50:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:50:24,980 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 [2021-05-02 18:50:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:24,981 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:50:24,981 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:50:24,982 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4241.5ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:50:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:50:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:50:24,983 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) [2021-05-02 18:50:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 18:50:24,984 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-02 18:50:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:24,984 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 18:50:24,984 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) [2021-05-02 18:50:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 18:50:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:50:24,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:24,984 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:25,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:50:25,201 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-02 18:50:25,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:25,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659596300] [2021-05-02 18:50:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:50:26,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:26,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659596300] [2021-05-02 18:50:26,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659596300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:26,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819211978] [2021-05-02 18:50:26,202 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 [2021-05-02 18:50:26,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:50:26,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:50:26,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:50:26,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819211978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:26,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:26,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:50:26,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429178517] [2021-05-02 18:50:26,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:50:26,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:26,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:50:26,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:50:26,477 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) [2021-05-02 18:50:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:28,565 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-02 18:50:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:50:28,565 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 [2021-05-02 18:50:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:28,566 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:50:28,566 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 18:50:28,567 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2776.5ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:50:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 18:50:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-02 18:50:28,568 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) [2021-05-02 18:50:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-02 18:50:28,569 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-02 18:50:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:28,569 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-02 18:50:28,569 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) [2021-05-02 18:50:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-02 18:50:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:50:28,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:28,569 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:28,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:28,777 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:28,777 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-02 18:50:28,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:28,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409016164] [2021-05-02 18:50:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:50:29,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:29,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409016164] [2021-05-02 18:50:29,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409016164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:29,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519759617] [2021-05-02 18:50:29,778 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 [2021-05-02 18:50:29,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:50:29,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:29,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:50:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:50:30,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519759617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:30,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:30,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:50:30,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458719131] [2021-05-02 18:50:30,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:50:30,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:30,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:50:30,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:50:30,066 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) [2021-05-02 18:50:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:32,198 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-02 18:50:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:50:32,198 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 [2021-05-02 18:50:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:32,199 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:50:32,199 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:50:32,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2825.5ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:50:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:50:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 18:50:32,201 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) [2021-05-02 18:50:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-02 18:50:32,201 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-02 18:50:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:32,202 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-02 18:50:32,202 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) [2021-05-02 18:50:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-02 18:50:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:50:32,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:32,202 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:32,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:32,408 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:32,408 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-02 18:50:32,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:32,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996486961] [2021-05-02 18:50:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:50:33,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:33,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996486961] [2021-05-02 18:50:33,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996486961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:33,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056003844] [2021-05-02 18:50:33,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-02 18:50:33,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:50:33,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:33,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:50:33,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:33,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2021-05-02 18:50:34,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056003844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:34,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:34,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-02 18:50:34,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542964716] [2021-05-02 18:50:34,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:50:34,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:50:34,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:50:34,418 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) [2021-05-02 18:50:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:37,765 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-02 18:50:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:50:37,766 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 [2021-05-02 18:50:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:37,766 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:50:37,766 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:50:37,767 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4730.1ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:50:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:50:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:50:37,769 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) [2021-05-02 18:50:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 18:50:37,769 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-02 18:50:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:37,769 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 18:50:37,769 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) [2021-05-02 18:50:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 18:50:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:50:37,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:37,770 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:37,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:50:37,970 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:37,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-02 18:50:37,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:37,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122633383] [2021-05-02 18:50:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:50:39,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:39,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122633383] [2021-05-02 18:50:39,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122633383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:39,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951702845] [2021-05-02 18:50:39,053 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 [2021-05-02 18:50:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:39,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:50:39,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:50:39,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951702845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:39,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:39,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:50:39,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403615341] [2021-05-02 18:50:39,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:50:39,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:39,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:50:39,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:50:39,336 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) [2021-05-02 18:50:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:41,612 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-02 18:50:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:50:41,613 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 [2021-05-02 18:50:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:41,613 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:50:41,613 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:50:41,614 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3141.5ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:50:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:50:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-02 18:50:41,616 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) [2021-05-02 18:50:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-02 18:50:41,616 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-02 18:50:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:41,616 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-02 18:50:41,616 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) [2021-05-02 18:50:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-02 18:50:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:50:41,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:41,617 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:41,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:41,829 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-02 18:50:41,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:41,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065435292] [2021-05-02 18:50:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:42,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:50:42,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:42,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065435292] [2021-05-02 18:50:42,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065435292] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:42,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399946847] [2021-05-02 18:50:42,971 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 [2021-05-02 18:50:43,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:50:43,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:43,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:50:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:43,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:50:43,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399946847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:43,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:43,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:50:43,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419880137] [2021-05-02 18:50:43,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:50:43,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:43,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:50:43,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:50:43,282 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) [2021-05-02 18:50:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:45,623 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-02 18:50:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:50:45,624 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 [2021-05-02 18:50:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:45,625 INFO L225 Difference]: With dead ends: 154 [2021-05-02 18:50:45,625 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 18:50:45,625 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3201.8ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:50:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 18:50:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-02 18:50:45,627 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) [2021-05-02 18:50:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-02 18:50:45,627 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-02 18:50:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:45,627 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-02 18:50:45,627 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) [2021-05-02 18:50:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-02 18:50:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:50:45,628 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:45,628 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:45,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:50:45,828 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-02 18:50:45,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:45,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069812539] [2021-05-02 18:50:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:50:46,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:46,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069812539] [2021-05-02 18:50:46,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069812539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:46,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690774362] [2021-05-02 18:50:46,993 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 [2021-05-02 18:50:47,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:50:47,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:50:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:47,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2863 trivial. 0 not checked. [2021-05-02 18:50:48,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690774362] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:48,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:48,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-02 18:50:48,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749070449] [2021-05-02 18:50:48,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:50:48,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:48,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:50:48,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:50:48,025 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) [2021-05-02 18:50:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:51,743 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-02 18:50:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:50:51,743 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 [2021-05-02 18:50:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:51,744 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:50:51,744 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:50:51,745 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 5298.4ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:50:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:50:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:50:51,746 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) [2021-05-02 18:50:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 18:50:51,747 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-02 18:50:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:51,747 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 18:50:51,747 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) [2021-05-02 18:50:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 18:50:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:50:51,747 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:51,747 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:51,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:50:51,953 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:51,953 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-02 18:50:51,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:51,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96128151] [2021-05-02 18:50:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:50:53,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:53,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96128151] [2021-05-02 18:50:53,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96128151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:53,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110063251] [2021-05-02 18:50:53,144 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 [2021-05-02 18:50:53,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:50:53,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:53,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:50:53,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:53,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:50:53,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110063251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:53,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:53,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:50:53,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103492431] [2021-05-02 18:50:53,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:50:53,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:53,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:50:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:50:53,454 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) [2021-05-02 18:50:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:55,953 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-02 18:50:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:50:55,954 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 [2021-05-02 18:50:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:55,954 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:50:55,954 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 18:50:55,955 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3361.8ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:50:55,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 18:50:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-02 18:50:55,956 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) [2021-05-02 18:50:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-02 18:50:55,957 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-02 18:50:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:55,957 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-02 18:50:55,957 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) [2021-05-02 18:50:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-02 18:50:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:50:55,957 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:55,958 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:56,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:50:56,165 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:56,165 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-02 18:50:56,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:56,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876157090] [2021-05-02 18:50:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:50:57,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:57,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876157090] [2021-05-02 18:50:57,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876157090] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:57,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491049084] [2021-05-02 18:50:57,398 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 [2021-05-02 18:50:57,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-02 18:50:57,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:57,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:50:57,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:50:57,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491049084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:57,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:57,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:50:57,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678006576] [2021-05-02 18:50:57,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:50:57,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:57,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:50:57,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:50:57,723 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) [2021-05-02 18:51:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:00,312 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-02 18:51:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:51:00,313 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 [2021-05-02 18:51:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:00,313 INFO L225 Difference]: With dead ends: 162 [2021-05-02 18:51:00,314 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 18:51:00,314 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3480.4ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:51:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 18:51:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-02 18:51:00,316 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) [2021-05-02 18:51:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-02 18:51:00,316 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-02 18:51:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:00,316 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-02 18:51:00,316 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) [2021-05-02 18:51:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-02 18:51:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:51:00,317 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:00,317 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:00,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:51:00,525 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-02 18:51:00,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:00,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363141794] [2021-05-02 18:51:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:51:01,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:01,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363141794] [2021-05-02 18:51:01,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363141794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:01,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643604650] [2021-05-02 18:51:01,811 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 [2021-05-02 18:51:01,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:51:01,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:01,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:51:01,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:02,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2021-05-02 18:51:02,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643604650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:02,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:02,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-02 18:51:02,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430997280] [2021-05-02 18:51:02,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:51:02,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:51:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:51:02,998 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) [2021-05-02 18:51:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:07,098 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-02 18:51:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:51:07,098 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 [2021-05-02 18:51:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:07,099 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:51:07,099 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:51:07,100 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5874.2ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:51:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:51:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:51:07,101 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) [2021-05-02 18:51:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 18:51:07,102 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-02 18:51:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:07,102 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 18:51:07,102 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) [2021-05-02 18:51:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 18:51:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:51:07,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:07,102 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:07,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:07,303 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-02 18:51:07,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:07,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447909452] [2021-05-02 18:51:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:08,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:51:08,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:08,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447909452] [2021-05-02 18:51:08,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447909452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:08,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996695347] [2021-05-02 18:51:08,642 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 [2021-05-02 18:51:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:08,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:51:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:08,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:51:08,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996695347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:08,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:08,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:51:08,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703999130] [2021-05-02 18:51:08,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:51:08,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:08,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:51:08,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:51:08,965 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) [2021-05-02 18:51:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:11,690 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-02 18:51:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:51:11,690 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 [2021-05-02 18:51:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:11,691 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:51:11,691 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 18:51:11,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3708.7ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:51:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 18:51:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 18:51:11,693 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) [2021-05-02 18:51:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-02 18:51:11,693 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-02 18:51:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:11,693 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-02 18:51:11,693 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) [2021-05-02 18:51:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-02 18:51:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:51:11,694 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:11,694 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:11,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:51:11,909 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:11,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-02 18:51:11,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:11,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227847755] [2021-05-02 18:51:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:51:13,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:13,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227847755] [2021-05-02 18:51:13,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227847755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635445426] [2021-05-02 18:51:13,282 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 [2021-05-02 18:51:13,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:13,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:13,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:51:13,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:13,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:51:13,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635445426] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:13,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:51:13,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191029155] [2021-05-02 18:51:13,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:51:13,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:51:13,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:51:13,617 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) [2021-05-02 18:51:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:16,422 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-02 18:51:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:51:16,422 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 [2021-05-02 18:51:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:16,423 INFO L225 Difference]: With dead ends: 170 [2021-05-02 18:51:16,423 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 18:51:16,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3821.3ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:51:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 18:51:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-02 18:51:16,425 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) [2021-05-02 18:51:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-02 18:51:16,426 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-02 18:51:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:16,426 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-02 18:51:16,426 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) [2021-05-02 18:51:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-02 18:51:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:51:16,426 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:16,426 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:16,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:16,637 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:16,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:16,637 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-02 18:51:16,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:16,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208277014] [2021-05-02 18:51:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:51:18,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:18,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208277014] [2021-05-02 18:51:18,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208277014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670522013] [2021-05-02 18:51:18,045 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 [2021-05-02 18:51:18,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:51:18,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:18,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:51:18,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2021-05-02 18:51:19,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670522013] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:19,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:19,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-02 18:51:19,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762811886] [2021-05-02 18:51:19,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:51:19,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:51:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:51:19,318 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) [2021-05-02 18:51:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:23,801 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-02 18:51:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:51:23,801 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 [2021-05-02 18:51:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:23,802 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:51:23,802 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:51:23,803 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6435.8ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 18:51:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:51:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:51:23,804 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) [2021-05-02 18:51:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 18:51:23,804 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-02 18:51:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:23,804 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 18:51:23,804 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) [2021-05-02 18:51:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 18:51:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:51:23,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:23,805 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:24,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 18:51:24,021 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-02 18:51:24,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:24,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598217189] [2021-05-02 18:51:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:51:25,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:25,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598217189] [2021-05-02 18:51:25,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598217189] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559675139] [2021-05-02 18:51:25,474 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 [2021-05-02 18:51:25,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:25,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:25,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:51:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:51:25,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559675139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:25,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:51:25,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072267519] [2021-05-02 18:51:25,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:51:25,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:25,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:51:25,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:51:25,810 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) [2021-05-02 18:51:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:28,795 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-02 18:51:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:51:28,795 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 [2021-05-02 18:51:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:28,796 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:51:28,796 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:51:28,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4066.9ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:51:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:51:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:51:28,798 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) [2021-05-02 18:51:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-02 18:51:28,798 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-02 18:51:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:28,798 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-02 18:51:28,798 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) [2021-05-02 18:51:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-02 18:51:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:51:28,799 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:28,799 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:29,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:29,014 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-02 18:51:29,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:29,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008360252] [2021-05-02 18:51:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:51:30,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:30,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008360252] [2021-05-02 18:51:30,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008360252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125799902] [2021-05-02 18:51:30,553 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 [2021-05-02 18:51:30,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-02 18:51:30,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:51:30,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:30,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:51:30,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125799902] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:30,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:51:30,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912525008] [2021-05-02 18:51:30,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:51:30,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:51:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:51:30,928 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) [2021-05-02 18:51:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:33,991 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-02 18:51:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:51:33,992 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 [2021-05-02 18:51:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:33,992 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:51:33,992 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 18:51:33,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4222.3ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:51:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 18:51:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 18:51:33,994 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) [2021-05-02 18:51:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-02 18:51:33,994 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-02 18:51:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:33,995 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-02 18:51:33,995 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) [2021-05-02 18:51:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-02 18:51:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:51:33,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:33,995 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:34,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 18:51:34,207 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:34,208 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-02 18:51:34,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:34,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76074310] [2021-05-02 18:51:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:51:35,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:35,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76074310] [2021-05-02 18:51:35,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76074310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:35,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376700286] [2021-05-02 18:51:35,772 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 [2021-05-02 18:51:35,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:51:35,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:51:35,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:36,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3907 trivial. 0 not checked. [2021-05-02 18:51:37,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376700286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:37,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:37,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-02 18:51:37,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032419009] [2021-05-02 18:51:37,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:51:37,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:51:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:51:37,207 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) [2021-05-02 18:51:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:42,103 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-02 18:51:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:51:42,103 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 [2021-05-02 18:51:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:42,104 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:51:42,104 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:51:42,105 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 7107.3ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 18:51:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:51:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:51:42,107 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) [2021-05-02 18:51:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 18:51:42,107 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-02 18:51:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:42,107 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 18:51:42,107 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) [2021-05-02 18:51:42,107 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 18:51:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:51:42,108 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:42,108 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:42,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:42,321 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-02 18:51:42,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:42,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918482892] [2021-05-02 18:51:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:51:43,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:43,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918482892] [2021-05-02 18:51:43,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918482892] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:43,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086350873] [2021-05-02 18:51:43,978 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 [2021-05-02 18:51:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:51:44,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:44,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:51:44,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086350873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:44,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:44,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:51:44,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115525694] [2021-05-02 18:51:44,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:51:44,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:44,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:51:44,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:51:44,343 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) [2021-05-02 18:51:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:47,582 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-02 18:51:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:51:47,582 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 [2021-05-02 18:51:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:47,583 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:51:47,583 INFO L226 Difference]: Without dead ends: 184 [2021-05-02 18:51:47,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4524.5ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:51:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-02 18:51:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-02 18:51:47,585 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) [2021-05-02 18:51:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-02 18:51:47,585 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-02 18:51:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:47,586 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-02 18:51:47,586 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) [2021-05-02 18:51:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-02 18:51:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:51:47,586 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:47,586 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:47,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:51:47,787 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:47,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-02 18:51:47,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:47,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811060331] [2021-05-02 18:51:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:51:49,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:49,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811060331] [2021-05-02 18:51:49,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811060331] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:49,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640910881] [2021-05-02 18:51:49,492 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 [2021-05-02 18:51:49,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:49,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:49,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:51:49,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:51:49,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640910881] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:49,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:49,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:51:49,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111435086] [2021-05-02 18:51:49,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:51:49,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:49,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:51:49,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:51:49,858 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) [2021-05-02 18:51:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:53,073 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-02 18:51:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:51:53,074 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 [2021-05-02 18:51:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:53,074 INFO L225 Difference]: With dead ends: 186 [2021-05-02 18:51:53,074 INFO L226 Difference]: Without dead ends: 186 [2021-05-02 18:51:53,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4652.9ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:51:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-02 18:51:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-02 18:51:53,077 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) [2021-05-02 18:51:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-02 18:51:53,077 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-02 18:51:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:53,077 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-02 18:51:53,077 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) [2021-05-02 18:51:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-02 18:51:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:51:53,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:53,078 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:53,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:53,285 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:53,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-02 18:51:53,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:53,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585887202] [2021-05-02 18:51:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:51:55,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:55,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585887202] [2021-05-02 18:51:55,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585887202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:55,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680544928] [2021-05-02 18:51:55,025 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 [2021-05-02 18:51:55,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:51:55,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:51:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:55,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2021-05-02 18:51:56,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680544928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:56,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:56,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-02 18:51:56,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058772369] [2021-05-02 18:51:56,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:51:56,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:56,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:51:56,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:51:56,565 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) [2021-05-02 18:52:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:01,865 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-02 18:52:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:52:01,865 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 [2021-05-02 18:52:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:01,866 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:52:01,866 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:52:01,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7817.1ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 18:52:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:52:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:52:01,868 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) [2021-05-02 18:52:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 18:52:01,869 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-02 18:52:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:01,869 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 18:52:01,869 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) [2021-05-02 18:52:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 18:52:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:52:01,870 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:01,870 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:02,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:52:02,085 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-02 18:52:02,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:02,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824352742] [2021-05-02 18:52:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:52:03,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:03,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824352742] [2021-05-02 18:52:03,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824352742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:03,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875751047] [2021-05-02 18:52:03,877 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 [2021-05-02 18:52:03,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:03,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:03,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:52:03,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:52:04,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875751047] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:04,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:52:04,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20542545] [2021-05-02 18:52:04,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:52:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:52:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:52:04,270 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) [2021-05-02 18:52:07,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:07,748 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-02 18:52:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:52:07,748 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 [2021-05-02 18:52:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:07,749 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:52:07,749 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 18:52:07,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4880.5ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:52:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 18:52:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 18:52:07,751 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) [2021-05-02 18:52:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-02 18:52:07,751 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-02 18:52:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:07,752 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-02 18:52:07,752 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) [2021-05-02 18:52:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-02 18:52:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:52:07,752 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:07,752 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:07,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:52:07,953 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-02 18:52:07,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:07,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002056157] [2021-05-02 18:52:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:52:09,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:09,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002056157] [2021-05-02 18:52:09,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002056157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:09,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375058326] [2021-05-02 18:52:09,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-02 18:52:09,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:52:09,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:09,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:52:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:09,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:52:10,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375058326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:10,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:10,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:52:10,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348152680] [2021-05-02 18:52:10,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:52:10,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:10,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:52:10,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:52:10,226 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) [2021-05-02 18:52:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:13,826 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-02 18:52:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:52:13,827 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 [2021-05-02 18:52:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:13,827 INFO L225 Difference]: With dead ends: 194 [2021-05-02 18:52:13,827 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 18:52:13,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5033.8ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:52:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 18:52:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-02 18:52:13,829 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) [2021-05-02 18:52:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-02 18:52:13,830 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-02 18:52:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:13,830 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-02 18:52:13,830 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) [2021-05-02 18:52:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-02 18:52:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:52:13,831 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:13,831 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:14,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:52:14,032 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-02 18:52:14,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:14,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699812887] [2021-05-02 18:52:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:52:15,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:15,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699812887] [2021-05-02 18:52:15,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699812887] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:15,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8902823] [2021-05-02 18:52:15,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-02 18:52:16,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:52:16,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:16,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:52:16,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:16,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2021-05-02 18:52:17,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8902823] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:17,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:17,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-02 18:52:17,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911342392] [2021-05-02 18:52:17,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:52:17,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:17,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:52:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:52:17,639 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) [2021-05-02 18:52:23,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:23,400 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-02 18:52:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:52:23,400 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 [2021-05-02 18:52:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:23,401 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:52:23,401 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:52:23,402 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8496.6ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 18:52:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:52:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:52:23,403 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) [2021-05-02 18:52:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 18:52:23,404 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-02 18:52:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:23,404 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 18:52:23,404 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) [2021-05-02 18:52:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 18:52:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:52:23,405 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:23,405 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:23,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:23,621 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:23,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:23,621 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-02 18:52:23,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:23,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531913107] [2021-05-02 18:52:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:52:25,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:25,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531913107] [2021-05-02 18:52:25,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531913107] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:25,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215805115] [2021-05-02 18:52:25,601 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 [2021-05-02 18:52:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:52:25,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:52:25,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215805115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:25,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:25,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:52:25,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966723713] [2021-05-02 18:52:25,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:52:25,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:25,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:52:25,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:52:25,985 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) [2021-05-02 18:52:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:29,856 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-02 18:52:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:52:29,857 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 [2021-05-02 18:52:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:29,858 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:52:29,858 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 18:52:29,859 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5388.6ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:52:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 18:52:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 18:52:29,860 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) [2021-05-02 18:52:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-02 18:52:29,860 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-02 18:52:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:29,860 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-02 18:52:29,861 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) [2021-05-02 18:52:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-02 18:52:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:52:29,861 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:29,861 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:30,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:30,077 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-02 18:52:30,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:30,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301702923] [2021-05-02 18:52:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:52:32,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:32,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301702923] [2021-05-02 18:52:32,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301702923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402104265] [2021-05-02 18:52:32,096 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 [2021-05-02 18:52:32,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:32,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:32,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:52:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:52:32,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402104265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:32,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:52:32,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138609060] [2021-05-02 18:52:32,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:52:32,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:32,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:52:32,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:52:32,498 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) [2021-05-02 18:52:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:36,291 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-02 18:52:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:52:36,292 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 [2021-05-02 18:52:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:36,293 INFO L225 Difference]: With dead ends: 202 [2021-05-02 18:52:36,293 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 18:52:36,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5511.0ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:52:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 18:52:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-02 18:52:36,295 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) [2021-05-02 18:52:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-02 18:52:36,295 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-02 18:52:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:36,295 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-02 18:52:36,296 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) [2021-05-02 18:52:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-02 18:52:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:52:36,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:36,296 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:36,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:36,512 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-02 18:52:36,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:36,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15338130] [2021-05-02 18:52:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:52:38,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:38,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15338130] [2021-05-02 18:52:38,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15338130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:38,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370963904] [2021-05-02 18:52:38,610 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 [2021-05-02 18:52:38,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:52:38,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:52:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:38,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5113 trivial. 0 not checked. [2021-05-02 18:52:40,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370963904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:40,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:40,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-02 18:52:40,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972324244] [2021-05-02 18:52:40,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:52:40,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:52:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:52:40,511 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) [2021-05-02 18:52:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:46,830 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-02 18:52:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:52:46,830 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 [2021-05-02 18:52:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:46,831 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:52:46,831 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:52:46,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 9325.0ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:52:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:52:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:52:46,834 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) [2021-05-02 18:52:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 18:52:46,834 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-02 18:52:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:46,834 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 18:52:46,834 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) [2021-05-02 18:52:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 18:52:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:52:46,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:46,835 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:47,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 18:52:47,050 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-02 18:52:47,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:47,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501375677] [2021-05-02 18:52:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:52:49,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:49,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501375677] [2021-05-02 18:52:49,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501375677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:49,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155728386] [2021-05-02 18:52:49,213 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 [2021-05-02 18:52:49,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:49,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:52:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:49,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:52:49,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155728386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:49,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:49,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:52:49,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913575287] [2021-05-02 18:52:49,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:52:49,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:49,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:52:49,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:52:49,640 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) [2021-05-02 18:52:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:53,597 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-02 18:52:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:52:53,597 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 [2021-05-02 18:52:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:53,598 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:52:53,598 INFO L226 Difference]: Without dead ends: 208 [2021-05-02 18:52:53,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5846.9ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:52:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-02 18:52:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-02 18:52:53,600 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) [2021-05-02 18:52:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-02 18:52:53,601 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-02 18:52:53,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:53,601 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-02 18:52:53,601 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) [2021-05-02 18:52:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-02 18:52:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:52:53,601 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:53,602 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:53,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:53,821 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-02 18:52:53,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:53,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749026992] [2021-05-02 18:52:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:52:56,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:56,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749026992] [2021-05-02 18:52:56,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749026992] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:56,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444025756] [2021-05-02 18:52:56,031 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 [2021-05-02 18:52:56,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-02 18:52:56,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:56,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:52:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:52:56,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444025756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:56,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:56,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:52:56,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818726463] [2021-05-02 18:52:56,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:52:56,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:56,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:52:56,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:52:56,528 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) [2021-05-02 18:53:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:00,798 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-02 18:53:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:53:00,798 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 [2021-05-02 18:53:00,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:00,799 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:53:00,799 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:53:00,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5991.3ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:53:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:53:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:53:00,801 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) [2021-05-02 18:53:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-02 18:53:00,801 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-02 18:53:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:00,801 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-02 18:53:00,802 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) [2021-05-02 18:53:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-02 18:53:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:53:00,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:00,802 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:01,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:01,003 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:01,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-02 18:53:01,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:01,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883924792] [2021-05-02 18:53:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:53:03,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:03,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883924792] [2021-05-02 18:53:03,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883924792] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:03,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491282076] [2021-05-02 18:53:03,300 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 [2021-05-02 18:53:03,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:53:03,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:03,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:53:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:03,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-05-02 18:53:05,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491282076] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:05,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:05,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-02 18:53:05,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604450639] [2021-05-02 18:53:05,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:53:05,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:05,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:53:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:53:05,357 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) [2021-05-02 18:53:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:12,264 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-02 18:53:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:53:12,264 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 [2021-05-02 18:53:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:12,265 INFO L225 Difference]: With dead ends: 215 [2021-05-02 18:53:12,265 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:53:12,267 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 10145.5ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 18:53:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:53:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:53:12,268 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) [2021-05-02 18:53:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 18:53:12,269 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-02 18:53:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:12,269 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 18:53:12,269 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) [2021-05-02 18:53:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 18:53:12,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:53:12,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:12,270 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:12,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:12,470 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:12,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-02 18:53:12,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:12,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53878799] [2021-05-02 18:53:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:53:14,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:14,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53878799] [2021-05-02 18:53:14,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53878799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:14,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740629421] [2021-05-02 18:53:14,846 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 [2021-05-02 18:53:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:14,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:53:14,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:14,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:14,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:53:15,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740629421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:15,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:15,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:53:15,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496556631] [2021-05-02 18:53:15,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:53:15,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:15,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:53:15,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:53:15,287 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) [2021-05-02 18:53:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:19,809 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-02 18:53:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:53:19,809 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 [2021-05-02 18:53:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:19,810 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:53:19,810 INFO L226 Difference]: Without dead ends: 216 [2021-05-02 18:53:19,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 6341.8ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:53:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-02 18:53:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-02 18:53:19,812 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) [2021-05-02 18:53:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-02 18:53:19,813 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-02 18:53:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:19,813 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-02 18:53:19,813 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) [2021-05-02 18:53:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-02 18:53:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:53:19,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:19,814 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:20,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 18:53:20,029 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-02 18:53:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:20,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523861518] [2021-05-02 18:53:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:53:22,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:22,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523861518] [2021-05-02 18:53:22,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523861518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:22,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862341126] [2021-05-02 18:53:22,425 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 [2021-05-02 18:53:22,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:22,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:22,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:53:22,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:22,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:53:22,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862341126] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:22,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:22,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:53:22,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495420554] [2021-05-02 18:53:22,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:53:22,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:53:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:53:22,869 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) [2021-05-02 18:53:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:27,392 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-02 18:53:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:53:27,393 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 [2021-05-02 18:53:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:27,393 INFO L225 Difference]: With dead ends: 218 [2021-05-02 18:53:27,393 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 18:53:27,394 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 6421.3ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:53:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 18:53:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 18:53:27,396 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) [2021-05-02 18:53:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-02 18:53:27,396 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-02 18:53:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:27,396 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-02 18:53:27,396 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) [2021-05-02 18:53:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-02 18:53:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:53:27,397 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:27,397 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:27,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:27,597 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-02 18:53:27,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:27,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932802480] [2021-05-02 18:53:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:53:30,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:30,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932802480] [2021-05-02 18:53:30,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932802480] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:30,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726508798] [2021-05-02 18:53:30,068 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 [2021-05-02 18:53:30,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:53:30,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:30,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:53:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:30,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2021-05-02 18:53:32,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726508798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:32,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:32,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-02 18:53:32,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630826352] [2021-05-02 18:53:32,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:53:32,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:32,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:53:32,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:53:32,208 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) [2021-05-02 18:53:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:39,581 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-02 18:53:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:53:39,582 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 [2021-05-02 18:53:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:39,582 INFO L225 Difference]: With dead ends: 223 [2021-05-02 18:53:39,583 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:53:39,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 10968.5ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 18:53:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:53:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:53:39,585 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) [2021-05-02 18:53:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 18:53:39,586 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-02 18:53:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:39,586 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 18:53:39,586 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) [2021-05-02 18:53:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 18:53:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:53:39,587 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:39,587 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:39,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:53:39,802 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-02 18:53:39,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:39,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379642769] [2021-05-02 18:53:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:53:42,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:42,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379642769] [2021-05-02 18:53:42,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379642769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:42,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437058003] [2021-05-02 18:53:42,442 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 [2021-05-02 18:53:42,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:42,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:42,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:53:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:53:42,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437058003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:42,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:42,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:53:42,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527547713] [2021-05-02 18:53:42,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:53:42,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:42,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:53:42,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:53:42,923 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) [2021-05-02 18:53:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:47,629 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-02 18:53:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:53:47,630 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 [2021-05-02 18:53:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:47,631 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:53:47,631 INFO L226 Difference]: Without dead ends: 224 [2021-05-02 18:53:47,632 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 6934.5ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:53:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-02 18:53:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-02 18:53:47,633 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) [2021-05-02 18:53:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-02 18:53:47,634 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-02 18:53:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:47,634 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-02 18:53:47,634 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) [2021-05-02 18:53:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-02 18:53:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:53:47,635 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:47,635 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:47,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:47,835 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:47,836 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-02 18:53:47,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:47,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905899186] [2021-05-02 18:53:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:53:50,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:50,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905899186] [2021-05-02 18:53:50,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905899186] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:50,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163862529] [2021-05-02 18:53:50,535 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 [2021-05-02 18:53:50,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-02 18:53:50,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:53:50,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:50,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:50,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:53:51,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163862529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:51,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:51,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:53:51,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155102356] [2021-05-02 18:53:51,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:53:51,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:51,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:53:51,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:53:51,045 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) [2021-05-02 18:53:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:55,937 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-02 18:53:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:53:55,937 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 [2021-05-02 18:53:55,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:55,938 INFO L225 Difference]: With dead ends: 226 [2021-05-02 18:53:55,938 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 18:53:55,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7049.5ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:53:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 18:53:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-02 18:53:55,940 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) [2021-05-02 18:53:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-02 18:53:55,941 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-02 18:53:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:55,941 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-02 18:53:55,941 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) [2021-05-02 18:53:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-02 18:53:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:53:55,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:55,942 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:56,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:56,157 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:56,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-02 18:53:56,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:56,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055925579] [2021-05-02 18:53:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:58,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:53:58,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:58,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055925579] [2021-05-02 18:53:58,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055925579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:58,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410553900] [2021-05-02 18:53:58,891 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 [2021-05-02 18:53:59,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:53:59,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:59,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:53:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6481 trivial. 0 not checked. [2021-05-02 18:54:01,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410553900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:01,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:01,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-02 18:54:01,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109448245] [2021-05-02 18:54:01,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:54:01,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:01,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:54:01,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:54:01,339 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) [2021-05-02 18:54:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:09,562 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-02 18:54:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:54:09,562 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 [2021-05-02 18:54:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:09,563 INFO L225 Difference]: With dead ends: 231 [2021-05-02 18:54:09,563 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:54:09,564 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 12013.5ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-02 18:54:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:54:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:54:09,566 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) [2021-05-02 18:54:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 18:54:09,567 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-02 18:54:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:09,567 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 18:54:09,567 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) [2021-05-02 18:54:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 18:54:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:54:09,568 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:09,568 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:09,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:09,781 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-02 18:54:09,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:09,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296840484] [2021-05-02 18:54:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:54:12,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:12,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296840484] [2021-05-02 18:54:12,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296840484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:12,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229609055] [2021-05-02 18:54:12,566 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 [2021-05-02 18:54:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:12,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:54:12,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:12,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:54:13,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229609055] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:13,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:13,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:54:13,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978839759] [2021-05-02 18:54:13,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:54:13,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:13,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:54:13,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:54:13,061 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) [2021-05-02 18:54:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:18,111 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-02 18:54:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:54:18,112 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 [2021-05-02 18:54:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:18,113 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:54:18,113 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 18:54:18,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7423.8ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:54:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 18:54:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-02 18:54:18,116 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) [2021-05-02 18:54:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-02 18:54:18,116 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-02 18:54:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:18,117 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-02 18:54:18,117 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) [2021-05-02 18:54:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-02 18:54:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:54:18,117 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:18,118 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:18,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:18,319 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-02 18:54:18,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:18,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164256654] [2021-05-02 18:54:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:54:21,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:21,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164256654] [2021-05-02 18:54:21,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164256654] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:21,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67293818] [2021-05-02 18:54:21,201 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 [2021-05-02 18:54:21,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:21,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:54:21,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:21,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:54:21,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67293818] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:21,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:21,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:54:21,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260610900] [2021-05-02 18:54:21,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:54:21,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:54:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:54:21,715 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) [2021-05-02 18:54:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:26,805 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-02 18:54:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:54:26,806 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 [2021-05-02 18:54:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:26,806 INFO L225 Difference]: With dead ends: 234 [2021-05-02 18:54:26,806 INFO L226 Difference]: Without dead ends: 234 [2021-05-02 18:54:26,807 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 7550.2ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:54:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-02 18:54:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-02 18:54:26,809 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) [2021-05-02 18:54:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-02 18:54:26,809 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-02 18:54:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:26,809 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-02 18:54:26,809 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) [2021-05-02 18:54:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-02 18:54:26,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:54:26,810 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:26,810 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:27,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:27,011 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-02 18:54:27,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:27,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496292246] [2021-05-02 18:54:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:29,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:54:29,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:29,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496292246] [2021-05-02 18:54:29,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496292246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:29,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747928964] [2021-05-02 18:54:29,939 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 [2021-05-02 18:54:30,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:54:30,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:30,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:54:30,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:30,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6973 trivial. 0 not checked. [2021-05-02 18:54:32,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747928964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:32,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:32,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-02 18:54:32,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633963273] [2021-05-02 18:54:32,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:54:32,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:54:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:54:32,479 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) [2021-05-02 18:54:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:41,328 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-02 18:54:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:54:41,329 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 [2021-05-02 18:54:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:41,329 INFO L225 Difference]: With dead ends: 239 [2021-05-02 18:54:41,329 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 18:54:41,331 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 13021.7ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-02 18:54:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 18:54:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 18:54:41,332 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) [2021-05-02 18:54:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 18:54:41,333 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-02 18:54:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:41,333 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 18:54:41,333 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) [2021-05-02 18:54:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 18:54:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:54:41,334 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:41,334 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:41,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:41,549 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-02 18:54:41,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:41,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103356687] [2021-05-02 18:54:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:54:44,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:44,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103356687] [2021-05-02 18:54:44,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103356687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:44,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720536178] [2021-05-02 18:54:44,607 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 [2021-05-02 18:54:44,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:54:44,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:54:44,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:44,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:54:45,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720536178] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:45,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:45,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:54:45,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985275864] [2021-05-02 18:54:45,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:54:45,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:45,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:54:45,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:54:45,132 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) [2021-05-02 18:54:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:50,493 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-02 18:54:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:54:50,493 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 [2021-05-02 18:54:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:50,494 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:54:50,494 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 18:54:50,495 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 7962.9ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:54:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 18:54:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 18:54:50,497 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) [2021-05-02 18:54:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-02 18:54:50,497 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-02 18:54:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:50,497 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-02 18:54:50,497 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) [2021-05-02 18:54:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-02 18:54:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:54:50,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:50,498 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:50,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:50,713 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-02 18:54:50,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:50,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636236798] [2021-05-02 18:54:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:54:53,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:53,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636236798] [2021-05-02 18:54:53,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636236798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:53,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145366042] [2021-05-02 18:54:53,786 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 [2021-05-02 18:54:53,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:54:53,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:53,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:54:53,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:54:54,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145366042] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:54,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:54,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:54:54,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104390303] [2021-05-02 18:54:54,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:54:54,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:54,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:54:54,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:54:54,341 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) [2021-05-02 18:55:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:00,031 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-02 18:55:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:55:00,031 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 [2021-05-02 18:55:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:00,032 INFO L225 Difference]: With dead ends: 242 [2021-05-02 18:55:00,032 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 18:55:00,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 8286.7ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:55:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 18:55:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-02 18:55:00,034 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) [2021-05-02 18:55:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-02 18:55:00,035 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-02 18:55:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:00,035 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-02 18:55:00,035 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) [2021-05-02 18:55:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-02 18:55:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:55:00,036 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:00,036 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:00,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:55:00,245 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-02 18:55:00,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:00,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462215402] [2021-05-02 18:55:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:55:03,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:03,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462215402] [2021-05-02 18:55:03,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462215402] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:03,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203185504] [2021-05-02 18:55:03,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-02 18:55:03,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:55:03,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:03,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:55:03,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7483 trivial. 0 not checked. [2021-05-02 18:55:06,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203185504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:06,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:06,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-02 18:55:06,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625924161] [2021-05-02 18:55:06,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:55:06,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:06,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:55:06,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:55:06,621 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) [2021-05-02 18:55:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:16,015 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-02 18:55:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:55:16,016 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 [2021-05-02 18:55:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:16,017 INFO L225 Difference]: With dead ends: 247 [2021-05-02 18:55:16,017 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 18:55:16,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 14425.4ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-02 18:55:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 18:55:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-02 18:55:16,020 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) [2021-05-02 18:55:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 18:55:16,020 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-02 18:55:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:16,020 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 18:55:16,020 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) [2021-05-02 18:55:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 18:55:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:55:16,021 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:16,021 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:16,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:16,222 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:16,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-02 18:55:16,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:16,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957908639] [2021-05-02 18:55:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:55:19,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:19,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957908639] [2021-05-02 18:55:19,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957908639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:19,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482252442] [2021-05-02 18:55:19,508 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 [2021-05-02 18:55:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:19,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:55:19,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:19,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:55:20,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482252442] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:20,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:20,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:55:20,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546583909] [2021-05-02 18:55:20,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:55:20,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:20,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:55:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:55:20,053 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) [2021-05-02 18:55:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:25,977 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-02 18:55:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:55:25,977 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 [2021-05-02 18:55:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:25,978 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:55:25,978 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 18:55:25,979 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 8733.6ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:55:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 18:55:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 18:55:25,981 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) [2021-05-02 18:55:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-02 18:55:25,981 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-02 18:55:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:25,981 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-02 18:55:25,981 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) [2021-05-02 18:55:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-02 18:55:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-02 18:55:25,982 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:25,982 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:26,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 18:55:26,183 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:26,183 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-02 18:55:26,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:26,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823994117] [2021-05-02 18:55:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:55:29,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:29,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823994117] [2021-05-02 18:55:29,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823994117] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:29,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926068904] [2021-05-02 18:55:29,647 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 [2021-05-02 18:55:29,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:55:29,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:55:29,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:29,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:55:30,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926068904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:30,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:30,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:55:30,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697571810] [2021-05-02 18:55:30,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:55:30,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:30,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:55:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:55:30,205 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) [2021-05-02 18:55:36,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:36,172 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-02 18:55:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:55:36,173 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 [2021-05-02 18:55:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:36,173 INFO L225 Difference]: With dead ends: 250 [2021-05-02 18:55:36,173 INFO L226 Difference]: Without dead ends: 250 [2021-05-02 18:55:36,175 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 9002.3ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:55:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-02 18:55:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-02 18:55:36,176 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) [2021-05-02 18:55:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-02 18:55:36,177 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-02 18:55:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:36,177 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-02 18:55:36,177 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) [2021-05-02 18:55:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-02 18:55:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 18:55:36,178 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:36,178 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:36,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:36,393 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:36,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:36,393 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-02 18:55:36,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:36,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331724656] [2021-05-02 18:55:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:55:39,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:39,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331724656] [2021-05-02 18:55:39,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331724656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:39,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364230064] [2021-05-02 18:55:39,888 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 [2021-05-02 18:55:39,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:55:39,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:39,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:55:40,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:40,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2021-05-02 18:55:42,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364230064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:42,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:42,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-02 18:55:42,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291325990] [2021-05-02 18:55:42,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-02 18:55:42,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:42,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-02 18:55:42,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:55:42,920 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) [2021-05-02 18:55:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:53,059 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-02 18:55:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-02 18:55:53,060 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 [2021-05-02 18:55:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:53,060 INFO L225 Difference]: With dead ends: 255 [2021-05-02 18:55:53,060 INFO L226 Difference]: Without dead ends: 255 [2021-05-02 18:55:53,062 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 15315.8ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-02 18:55:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-02 18:55:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-02 18:55:53,064 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) [2021-05-02 18:55:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 18:55:53,064 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-02 18:55:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:53,064 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 18:55:53,064 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) [2021-05-02 18:55:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 18:55:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:55:53,065 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:53,065 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:53,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:53,285 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:53,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-02 18:55:53,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:53,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879481707] [2021-05-02 18:55:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:55:56,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:56,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879481707] [2021-05-02 18:55:56,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879481707] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:56,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856074977] [2021-05-02 18:55:56,872 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 [2021-05-02 18:55:56,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:55:56,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:56,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:55:56,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:55:57,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856074977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:57,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:57,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:55:57,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946554601] [2021-05-02 18:55:57,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:55:57,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:57,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:55:57,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:55:57,449 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) [2021-05-02 18:56:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:03,704 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-02 18:56:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:56:03,704 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 [2021-05-02 18:56:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:03,705 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:56:03,705 INFO L226 Difference]: Without dead ends: 256 [2021-05-02 18:56:03,706 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 9454.5ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:56:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-02 18:56:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-02 18:56:03,708 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) [2021-05-02 18:56:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-02 18:56:03,708 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-02 18:56:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:03,708 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-02 18:56:03,708 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) [2021-05-02 18:56:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-02 18:56:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-02 18:56:03,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:03,709 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:03,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:03,910 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-02 18:56:03,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:03,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726373599] [2021-05-02 18:56:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:56:07,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:07,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726373599] [2021-05-02 18:56:07,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726373599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:07,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568776972] [2021-05-02 18:56:07,719 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 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 [2021-05-02 18:56:07,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-02 18:56:07,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:07,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:56:07,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:07,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:56:08,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568776972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:08,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:08,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:56:08,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112860020] [2021-05-02 18:56:08,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:56:08,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:08,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:56:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:56:08,396 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) [2021-05-02 18:56:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:14,955 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-02 18:56:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:56:14,955 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 [2021-05-02 18:56:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:14,956 INFO L225 Difference]: With dead ends: 258 [2021-05-02 18:56:14,956 INFO L226 Difference]: Without dead ends: 258 [2021-05-02 18:56:14,957 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 9939.3ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:56:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-02 18:56:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-02 18:56:14,959 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) [2021-05-02 18:56:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-02 18:56:14,959 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-02 18:56:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:14,959 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-02 18:56:14,960 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) [2021-05-02 18:56:14,960 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-02 18:56:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 18:56:14,960 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:14,960 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:15,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:15,161 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-02 18:56:15,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:15,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675169101] [2021-05-02 18:56:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:56:19,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:19,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675169101] [2021-05-02 18:56:19,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675169101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:19,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650633747] [2021-05-02 18:56:19,058 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 [2021-05-02 18:56:19,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:56:19,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:19,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:56:19,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:19,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:20,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8557 trivial. 0 not checked. [2021-05-02 18:56:22,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650633747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:22,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:22,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-02 18:56:22,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235030695] [2021-05-02 18:56:22,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-02 18:56:22,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-02 18:56:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:56:22,637 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) [2021-05-02 18:56:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:33,959 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-02 18:56:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-02 18:56:33,960 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 [2021-05-02 18:56:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:33,960 INFO L225 Difference]: With dead ends: 263 [2021-05-02 18:56:33,960 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 18:56:33,962 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 17238.2ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-02 18:56:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 18:56:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-02 18:56:33,964 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) [2021-05-02 18:56:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 18:56:33,964 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-02 18:56:33,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:33,964 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 18:56:33,964 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) [2021-05-02 18:56:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 18:56:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 18:56:33,965 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:33,965 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:34,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:56:34,166 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:34,167 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-02 18:56:34,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:34,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953413357] [2021-05-02 18:56:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:56:38,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:38,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953413357] [2021-05-02 18:56:38,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953413357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:38,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808249591] [2021-05-02 18:56:38,138 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 [2021-05-02 18:56:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:38,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:56:38,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:56:38,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808249591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:38,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:38,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:56:38,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994477766] [2021-05-02 18:56:38,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:56:38,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:56:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:56:38,772 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) [2021-05-02 18:56:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:45,668 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-02 18:56:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:56:45,668 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 [2021-05-02 18:56:45,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:45,669 INFO L225 Difference]: With dead ends: 264 [2021-05-02 18:56:45,669 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 18:56:45,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 10314.7ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:56:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 18:56:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 18:56:45,672 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) [2021-05-02 18:56:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-02 18:56:45,672 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-02 18:56:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:45,672 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-02 18:56:45,673 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) [2021-05-02 18:56:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-02 18:56:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:56:45,673 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:45,673 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:45,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:45,874 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-02 18:56:45,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:45,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651926537] [2021-05-02 18:56:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:56:49,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:49,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651926537] [2021-05-02 18:56:49,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651926537] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:49,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157206680] [2021-05-02 18:56:49,929 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 [2021-05-02 18:56:50,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:56:50,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:50,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:56:50,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:56:50,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157206680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:50,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:50,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:56:50,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433904730] [2021-05-02 18:56:50,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:56:50,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:50,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:56:50,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:56:50,572 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) [2021-05-02 18:56:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:57,554 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-02 18:56:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:56:57,555 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 [2021-05-02 18:56:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:57,555 INFO L225 Difference]: With dead ends: 266 [2021-05-02 18:56:57,555 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 18:56:57,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 10580.5ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:56:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 18:56:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-02 18:56:57,558 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) [2021-05-02 18:56:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-02 18:56:57,559 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-02 18:56:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:57,559 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-02 18:56:57,559 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) [2021-05-02 18:56:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-02 18:56:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 18:56:57,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:57,560 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:57,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 18:56:57,761 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-02 18:56:57,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:57,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208062075] [2021-05-02 18:56:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:57:02,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:02,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208062075] [2021-05-02 18:57:02,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208062075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:02,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768112400] [2021-05-02 18:57:02,002 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 [2021-05-02 18:57:02,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 18:57:02,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:02,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:57:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:02,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9121 trivial. 0 not checked. [2021-05-02 18:57:05,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768112400] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:05,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:05,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-02 18:57:05,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701891736] [2021-05-02 18:57:05,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-02 18:57:05,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:05,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-02 18:57:05,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:57:05,634 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) [2021-05-02 18:57:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:17,689 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-02 18:57:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-02 18:57:17,690 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 [2021-05-02 18:57:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:17,691 INFO L225 Difference]: With dead ends: 271 [2021-05-02 18:57:17,691 INFO L226 Difference]: Without dead ends: 271 [2021-05-02 18:57:17,693 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 18325.3ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-02 18:57:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-02 18:57:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-02 18:57:17,694 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) [2021-05-02 18:57:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 18:57:17,695 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-02 18:57:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:17,695 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 18:57:17,695 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) [2021-05-02 18:57:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 18:57:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 18:57:17,696 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:17,696 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:17,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:17,896 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-02 18:57:17,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:17,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074423284] [2021-05-02 18:57:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:57:22,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:22,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074423284] [2021-05-02 18:57:22,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074423284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:22,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24604200] [2021-05-02 18:57:22,238 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 [2021-05-02 18:57:22,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:57:22,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:22,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 18:57:22,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:22,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:57:22,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24604200] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:22,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:22,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 18:57:22,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732385501] [2021-05-02 18:57:22,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:57:22,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:22,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:57:22,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:57:22,917 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) [2021-05-02 18:57:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:30,534 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-02 18:57:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:57:30,535 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 [2021-05-02 18:57:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:30,536 INFO L225 Difference]: With dead ends: 272 [2021-05-02 18:57:30,536 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 18:57:30,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 11386.8ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:57:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 18:57:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 18:57:30,539 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) [2021-05-02 18:57:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-02 18:57:30,539 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-02 18:57:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:30,539 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-02 18:57:30,539 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) [2021-05-02 18:57:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-02 18:57:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-02 18:57:30,540 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:30,540 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:30,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:30,741 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:30,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-02 18:57:30,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:30,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580011066] [2021-05-02 18:57:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:57:35,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:35,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580011066] [2021-05-02 18:57:35,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580011066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:35,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948997602] [2021-05-02 18:57:35,425 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 [2021-05-02 18:57:35,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-02 18:57:35,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:35,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:57:35,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:35,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:57:36,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948997602] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:36,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:36,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:57:36,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988553261] [2021-05-02 18:57:36,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:57:36,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:36,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:57:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:57:36,195 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) [2021-05-02 18:57:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:44,177 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-02 18:57:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:57:44,178 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 [2021-05-02 18:57:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:44,179 INFO L225 Difference]: With dead ends: 274 [2021-05-02 18:57:44,179 INFO L226 Difference]: Without dead ends: 274 [2021-05-02 18:57:44,180 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 12004.5ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:57:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-02 18:57:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-02 18:57:44,182 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) [2021-05-02 18:57:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-02 18:57:44,182 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-02 18:57:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:44,182 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-02 18:57:44,183 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) [2021-05-02 18:57:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-02 18:57:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 18:57:44,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:44,183 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:44,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 18:57:44,389 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:44,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-02 18:57:44,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:44,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934179921] [2021-05-02 18:57:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:57:49,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:49,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934179921] [2021-05-02 18:57:49,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934179921] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:49,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126557826] [2021-05-02 18:57:49,192 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 [2021-05-02 18:57:49,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 18:57:49,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:49,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:57:49,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:49,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:49,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:49,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:51,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9703 trivial. 0 not checked. [2021-05-02 18:57:53,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126557826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:53,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:53,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-02 18:57:53,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266931194] [2021-05-02 18:57:53,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-02 18:57:53,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-02 18:57:53,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 18:57:53,419 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) [2021-05-02 18:58:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:06,883 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-02 18:58:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-02 18:58:06,884 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 [2021-05-02 18:58:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:06,885 INFO L225 Difference]: With dead ends: 279 [2021-05-02 18:58:06,885 INFO L226 Difference]: Without dead ends: 279 [2021-05-02 18:58:06,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 20689.4ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-02 18:58:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-02 18:58:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-02 18:58:06,889 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) [2021-05-02 18:58:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 18:58:06,889 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-02 18:58:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:06,889 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 18:58:06,890 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) [2021-05-02 18:58:06,890 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 18:58:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 18:58:06,890 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:06,891 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:07,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 18:58:07,092 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-02 18:58:07,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:07,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997948381] [2021-05-02 18:58:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:58:11,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:11,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997948381] [2021-05-02 18:58:11,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997948381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:11,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2159139] [2021-05-02 18:58:11,959 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 [2021-05-02 18:58:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:12,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 18:58:12,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:58:12,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2159139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:12,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:12,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 18:58:12,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713121904] [2021-05-02 18:58:12,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:58:12,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:12,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:58:12,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:58:12,794 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) [2021-05-02 18:58:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:21,273 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-02 18:58:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 18:58:21,273 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 [2021-05-02 18:58:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:21,274 INFO L225 Difference]: With dead ends: 280 [2021-05-02 18:58:21,274 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 18:58:21,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 12757.0ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 18:58:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 18:58:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-02 18:58:21,277 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) [2021-05-02 18:58:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-02 18:58:21,277 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-02 18:58:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:21,277 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-02 18:58:21,277 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) [2021-05-02 18:58:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-02 18:58:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-02 18:58:21,278 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:21,278 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:21,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:21,496 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:21,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:21,496 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-02 18:58:21,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:21,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488713650] [2021-05-02 18:58:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:58:26,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:26,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488713650] [2021-05-02 18:58:26,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488713650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:26,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629915680] [2021-05-02 18:58:26,411 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 [2021-05-02 18:58:26,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:58:26,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:58:26,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:58:27,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629915680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:27,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:27,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 18:58:27,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639211932] [2021-05-02 18:58:27,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 18:58:27,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:27,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 18:58:27,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:58:27,160 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) [2021-05-02 18:58:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:35,500 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-02 18:58:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:58:35,501 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 [2021-05-02 18:58:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:35,501 INFO L225 Difference]: With dead ends: 282 [2021-05-02 18:58:35,501 INFO L226 Difference]: Without dead ends: 282 [2021-05-02 18:58:35,503 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 12591.6ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 18:58:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-02 18:58:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-02 18:58:35,504 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) [2021-05-02 18:58:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-02 18:58:35,505 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-02 18:58:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:35,505 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-02 18:58:35,505 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) [2021-05-02 18:58:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-02 18:58:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 18:58:35,506 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:35,506 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:35,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 18:58:35,706 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-02 18:58:35,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:35,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580213074] [2021-05-02 18:58:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:58:41,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:41,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580213074] [2021-05-02 18:58:41,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580213074] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:41,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290223106] [2021-05-02 18:58:41,358 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 [2021-05-02 18:58:41,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 18:58:41,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:41,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 18:58:41,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:41,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:41,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:41,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:41,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:43,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-05-02 18:58:45,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290223106] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:45,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:45,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-02 18:58:45,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869614290] [2021-05-02 18:58:45,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-02 18:58:45,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:45,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-02 18:58:45,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:58:45,671 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) [2021-05-02 18:59:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:00,340 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-02 18:59:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-02 18:59:00,341 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 [2021-05-02 18:59:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:00,342 INFO L225 Difference]: With dead ends: 287 [2021-05-02 18:59:00,342 INFO L226 Difference]: Without dead ends: 287 [2021-05-02 18:59:00,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 22800.0ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-02 18:59:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-02 18:59:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-02 18:59:00,346 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) [2021-05-02 18:59:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-02 18:59:00,346 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-02 18:59:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:00,346 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-02 18:59:00,346 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) [2021-05-02 18:59:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-02 18:59:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 18:59:00,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:00,347 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:00,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 18:59:00,562 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-02 18:59:00,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:00,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080397508] [2021-05-02 18:59:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:59:06,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:06,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080397508] [2021-05-02 18:59:06,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080397508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:06,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770221796] [2021-05-02 18:59:06,857 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 [2021-05-02 18:59:06,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:59:06,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 18:59:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:59:07,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770221796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:07,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:07,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 18:59:07,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549292340] [2021-05-02 18:59:07,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 18:59:07,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:07,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 18:59:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:59:07,895 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) [2021-05-02 18:59:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:17,567 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-02 18:59:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:59:17,568 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 [2021-05-02 18:59:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:17,569 INFO L225 Difference]: With dead ends: 288 [2021-05-02 18:59:17,569 INFO L226 Difference]: Without dead ends: 288 [2021-05-02 18:59:17,570 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 15187.5ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 18:59:17,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-02 18:59:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-02 18:59:17,572 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) [2021-05-02 18:59:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-02 18:59:17,572 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-02 18:59:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:17,572 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-02 18:59:17,573 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) [2021-05-02 18:59:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-02 18:59:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 18:59:17,573 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:17,573 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:17,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 18:59:17,774 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-02 18:59:17,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:17,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779962004] [2021-05-02 18:59:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:59:23,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:23,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779962004] [2021-05-02 18:59:23,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779962004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:23,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523896943] [2021-05-02 18:59:23,427 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 [2021-05-02 18:59:23,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-02 18:59:23,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:23,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 18:59:23,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:23,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:59:24,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523896943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:24,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:24,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 18:59:24,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188845536] [2021-05-02 18:59:24,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:59:24,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:24,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:59:24,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:59:24,355 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) [2021-05-02 18:59:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:33,886 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-02 18:59:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 18:59:33,887 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 [2021-05-02 18:59:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:33,888 INFO L225 Difference]: With dead ends: 290 [2021-05-02 18:59:33,888 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 18:59:33,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 14423.7ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 18:59:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 18:59:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 18:59:33,891 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) [2021-05-02 18:59:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-02 18:59:33,891 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-02 18:59:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:33,891 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-02 18:59:33,892 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) [2021-05-02 18:59:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-02 18:59:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-02 18:59:33,892 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:33,893 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:34,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:34,093 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:34,093 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-02 18:59:34,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:34,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891996436] [2021-05-02 18:59:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:59:40,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:40,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891996436] [2021-05-02 18:59:40,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891996436] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:40,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932009530] [2021-05-02 18:59:40,046 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 [2021-05-02 18:59:40,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 18:59:40,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:40,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:59:40,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:40,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:40,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:40,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:40,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:40,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:41,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10921 trivial. 0 not checked. [2021-05-02 18:59:45,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932009530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:45,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:45,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-02 18:59:45,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328068128] [2021-05-02 18:59:45,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-02 18:59:45,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:45,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-02 18:59:45,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 18:59:45,258 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) [2021-05-02 19:00:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:02,125 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-02 19:00:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-02 19:00:02,126 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 [2021-05-02 19:00:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:02,127 INFO L225 Difference]: With dead ends: 295 [2021-05-02 19:00:02,127 INFO L226 Difference]: Without dead ends: 295 [2021-05-02 19:00:02,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 25852.1ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-02 19:00:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-02 19:00:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-02 19:00:02,131 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) [2021-05-02 19:00:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-02 19:00:02,132 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-02 19:00:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:02,132 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-02 19:00:02,132 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) [2021-05-02 19:00:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-02 19:00:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 19:00:02,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:02,133 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:02,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 19:00:02,345 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-02 19:00:02,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:02,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322718844] [2021-05-02 19:00:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:00:08,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:08,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322718844] [2021-05-02 19:00:08,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322718844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:08,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396036977] [2021-05-02 19:00:08,897 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 [2021-05-02 19:00:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:08,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 19:00:08,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:09,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:00:09,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396036977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:09,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:09,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-02 19:00:09,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162062385] [2021-05-02 19:00:09,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 19:00:09,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:09,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 19:00:09,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 19:00:09,863 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) [2021-05-02 19:00:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:21,196 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-02 19:00:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 19:00:21,197 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 [2021-05-02 19:00:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:21,198 INFO L225 Difference]: With dead ends: 296 [2021-05-02 19:00:21,198 INFO L226 Difference]: Without dead ends: 296 [2021-05-02 19:00:21,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 17256.6ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 19:00:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-02 19:00:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-02 19:00:21,202 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) [2021-05-02 19:00:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-02 19:00:21,202 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-02 19:00:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:21,202 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-02 19:00:21,202 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) [2021-05-02 19:00:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-02 19:00:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-02 19:00:21,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:21,203 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:21,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 19:00:21,404 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-02 19:00:21,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:21,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18354595] [2021-05-02 19:00:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:00:28,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:28,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18354595] [2021-05-02 19:00:28,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18354595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:28,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459250926] [2021-05-02 19:00:28,083 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 [2021-05-02 19:00:28,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:00:28,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 19:00:28,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:28,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:00:29,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459250926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:29,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:29,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-02 19:00:29,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899285790] [2021-05-02 19:00:29,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:00:29,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:29,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:00:29,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:00:29,069 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) [2021-05-02 19:00:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:40,414 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-02 19:00:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 19:00:40,415 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 [2021-05-02 19:00:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:40,416 INFO L225 Difference]: With dead ends: 298 [2021-05-02 19:00:40,416 INFO L226 Difference]: Without dead ends: 298 [2021-05-02 19:00:40,418 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 17365.6ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 19:00:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-02 19:00:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-02 19:00:40,420 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) [2021-05-02 19:00:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-02 19:00:40,420 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-02 19:00:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:40,421 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-02 19:00:40,421 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) [2021-05-02 19:00:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-02 19:00:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-02 19:00:40,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:40,422 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:40,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:40,639 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-02 19:00:40,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:40,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167810820] [2021-05-02 19:00:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:00:48,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:48,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167810820] [2021-05-02 19:00:48,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167810820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:48,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669551614] [2021-05-02 19:00:48,434 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 [2021-05-02 19:00:48,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 19:00:48,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:48,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 19:00:48,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7452 proven. 1156 refuted. 0 times theorem prover too weak. 11557 trivial. 0 not checked. [2021-05-02 19:00:55,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669551614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:55,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:55,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-02 19:00:55,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074504127] [2021-05-02 19:00:55,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-02 19:00:55,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:55,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-02 19:00:55,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 19:00:55,089 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) [2021-05-02 19:01:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:16,266 INFO L93 Difference]: Finished difference Result 303 states and 340 transitions. [2021-05-02 19:01:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-02 19:01:16,267 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 [2021-05-02 19:01:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:16,268 INFO L225 Difference]: With dead ends: 303 [2021-05-02 19:01:16,268 INFO L226 Difference]: Without dead ends: 303 [2021-05-02 19:01:16,271 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 32976.0ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-02 19:01:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-05-02 19:01:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-05-02 19:01:16,273 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) [2021-05-02 19:01:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 338 transitions. [2021-05-02 19:01:16,273 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 338 transitions. Word has length 297 [2021-05-02 19:01:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:16,273 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 338 transitions. [2021-05-02 19:01:16,273 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) [2021-05-02 19:01:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 338 transitions. [2021-05-02 19:01:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-02 19:01:16,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:16,274 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:16,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:16,475 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:16,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1755440904, now seen corresponding path program 106 times [2021-05-02 19:01:16,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:16,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517747154] [2021-05-02 19:01:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-02 19:01:25,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:25,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517747154] [2021-05-02 19:01:25,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517747154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:25,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225254579] [2021-05-02 19:01:25,277 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 [2021-05-02 19:01:25,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:01:25,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:25,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 19:01:25,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:25,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-02 19:01:26,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225254579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:26,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:26,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-02 19:01:26,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763176647] [2021-05-02 19:01:26,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 19:01:26,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 19:01:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 19:01:26,679 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) [2021-05-02 19:01:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:40,220 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2021-05-02 19:01:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 19:01:40,221 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 [2021-05-02 19:01:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:40,222 INFO L225 Difference]: With dead ends: 304 [2021-05-02 19:01:40,222 INFO L226 Difference]: Without dead ends: 304 [2021-05-02 19:01:40,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 21360.8ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 19:01:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-02 19:01:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-02 19:01:40,225 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) [2021-05-02 19:01:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 340 transitions. [2021-05-02 19:01:40,225 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 340 transitions. Word has length 301 [2021-05-02 19:01:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:40,225 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 340 transitions. [2021-05-02 19:01:40,225 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) [2021-05-02 19:01:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 340 transitions. [2021-05-02 19:01:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-02 19:01:40,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:40,226 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:40,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:40,427 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1856117860, now seen corresponding path program 107 times [2021-05-02 19:01:40,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:40,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196738476] [2021-05-02 19:01:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat