/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:19:46,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:19:46,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:19:46,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:19:46,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:19:46,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:19:46,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:19:46,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:19:46,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:19:46,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:19:46,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:19:46,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:19:46,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:19:46,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:19:46,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:19:46,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:19:46,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:19:46,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:19:46,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:19:46,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:19:46,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:19:46,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:19:46,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:19:46,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:19:46,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:19:46,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:19:46,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:19:46,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:19:46,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:19:46,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:19:46,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:19:46,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:19:46,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:19:46,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:19:46,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:19:46,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:19:46,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:19:46,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:19:46,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:19:46,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:19:46,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:19:46,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:19:46,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:19:46,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:19:46,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:19:46,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:19:46,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:19:46,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:19:46,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:19:46,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:19:46,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:19:46,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:19:46,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:19:46,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:19:46,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:19:46,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:19:46,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:19:46,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:19:46,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:19:46,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:19:46,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:19:46,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:19:46,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:19:46,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:19:46,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:19:46,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:19:46,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:19:46,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:19:46,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:19:46,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:19:46,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:19:46,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:19:47,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:19:47,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:19:47,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:19:47,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:19:47,038 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:19:47,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:19:47,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c78cda78/2cd95fbde2624507808d4fa398086161/FLAGeabacb299 [2020-10-14 09:19:47,703 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:19:47,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:19:47,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c78cda78/2cd95fbde2624507808d4fa398086161/FLAGeabacb299 [2020-10-14 09:19:47,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c78cda78/2cd95fbde2624507808d4fa398086161 [2020-10-14 09:19:47,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:19:47,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:19:47,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:19:47,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:19:47,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:19:47,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:47" (1/1) ... [2020-10-14 09:19:47,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:47, skipping insertion in model container [2020-10-14 09:19:47,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:47" (1/1) ... [2020-10-14 09:19:47,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:19:48,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:19:48,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:19:48,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:19:48,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:19:48,656 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:19:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48 WrapperNode [2020-10-14 09:19:48,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:19:48,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:19:48,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:19:48,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:19:48,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... [2020-10-14 09:19:48,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:19:48,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:19:48,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:19:48,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:19:48,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-14 09:19:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:19:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:19:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:19:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:19:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:19:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:19:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:19:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:19:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:19:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:19:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:19:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:19:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:19:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:19:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:19:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:19:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:19:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:19:49,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:19:49,861 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:19:49,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:49 BoogieIcfgContainer [2020-10-14 09:19:49,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:19:49,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:19:49,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:19:49,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:19:49,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:19:47" (1/3) ... [2020-10-14 09:19:49,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7661f2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:49, skipping insertion in model container [2020-10-14 09:19:49,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:48" (2/3) ... [2020-10-14 09:19:49,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7661f2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:49, skipping insertion in model container [2020-10-14 09:19:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:49" (3/3) ... [2020-10-14 09:19:49,883 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:19:49,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:19:49,900 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:19:49,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:19:49,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:19:49,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:19:49,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:19:49,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:19:49,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:19:49,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:19:49,940 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:19:49,940 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:19:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-10-14 09:19:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 09:19:49,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:49,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:49,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1170257874, now seen corresponding path program 1 times [2020-10-14 09:19:49,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:49,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527141659] [2020-10-14 09:19:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:53,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 09:19:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:19:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2917 [2020-10-14 09:19:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:53,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 09:19:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:19:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:19:53,609 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:19:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:19:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:53,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:53,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527141659] [2020-10-14 09:19:53,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:53,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:53,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910141930] [2020-10-14 09:19:53,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:53,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:53,697 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 4 states. [2020-10-14 09:19:53,943 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 09:19:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:55,253 INFO L93 Difference]: Finished difference Result 443 states and 725 transitions. [2020-10-14 09:19:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:55,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-14 09:19:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:55,271 INFO L225 Difference]: With dead ends: 443 [2020-10-14 09:19:55,272 INFO L226 Difference]: Without dead ends: 332 [2020-10-14 09:19:55,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-14 09:19:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2020-10-14 09:19:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-14 09:19:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 494 transitions. [2020-10-14 09:19:55,349 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 494 transitions. Word has length 84 [2020-10-14 09:19:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:55,350 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 494 transitions. [2020-10-14 09:19:55,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 494 transitions. [2020-10-14 09:19:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 09:19:55,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:55,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:55,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:19:55,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2097746024, now seen corresponding path program 1 times [2020-10-14 09:19:55,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131779987] [2020-10-14 09:19:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:57,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:57,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 09:19:57,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:19:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-10-14 09:19:57,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:57,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:57,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:19:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 09:19:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:19:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:57,399 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:19:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:57,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:19:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:57,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:57,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131779987] [2020-10-14 09:19:57,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:57,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:19:57,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133298844] [2020-10-14 09:19:57,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:19:57,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:57,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:19:57,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:57,457 INFO L87 Difference]: Start difference. First operand 330 states and 494 transitions. Second operand 5 states. [2020-10-14 09:19:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:58,590 INFO L93 Difference]: Finished difference Result 507 states and 774 transitions. [2020-10-14 09:19:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:19:58,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-14 09:19:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:58,597 INFO L225 Difference]: With dead ends: 507 [2020-10-14 09:19:58,597 INFO L226 Difference]: Without dead ends: 505 [2020-10-14 09:19:58,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:19:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-14 09:19:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 332. [2020-10-14 09:19:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-14 09:19:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 496 transitions. [2020-10-14 09:19:58,630 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 496 transitions. Word has length 85 [2020-10-14 09:19:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:58,631 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 496 transitions. [2020-10-14 09:19:58,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:19:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 496 transitions. [2020-10-14 09:19:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 09:19:58,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:58,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:58,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:19:58,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash 884071159, now seen corresponding path program 1 times [2020-10-14 09:19:58,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:58,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074850604] [2020-10-14 09:19:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:59,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 09:19:59,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:19:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-14 09:19:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:59,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:19:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:19:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 09:19:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:59,838 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:19:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:59,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:19:59,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:59,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:59,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074850604] [2020-10-14 09:19:59,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:59,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:19:59,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111045122] [2020-10-14 09:19:59,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:19:59,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:19:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:59,899 INFO L87 Difference]: Start difference. First operand 332 states and 496 transitions. Second operand 5 states. [2020-10-14 09:20:00,104 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 09:20:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:01,031 INFO L93 Difference]: Finished difference Result 711 states and 1097 transitions. [2020-10-14 09:20:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:20:01,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 09:20:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:01,036 INFO L225 Difference]: With dead ends: 711 [2020-10-14 09:20:01,036 INFO L226 Difference]: Without dead ends: 515 [2020-10-14 09:20:01,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:20:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-14 09:20:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 511. [2020-10-14 09:20:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-14 09:20:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 779 transitions. [2020-10-14 09:20:01,083 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 779 transitions. Word has length 86 [2020-10-14 09:20:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:01,086 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 779 transitions. [2020-10-14 09:20:01,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:20:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 779 transitions. [2020-10-14 09:20:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:20:01,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:01,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:01,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:20:01,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1001249171, now seen corresponding path program 1 times [2020-10-14 09:20:01,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:01,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470365767] [2020-10-14 09:20:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:20:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:20:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:06,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:20:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:20:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:06,327 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:06,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:06,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:06,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:20:06,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:06,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:06,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470365767] [2020-10-14 09:20:06,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:06,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:06,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551008236] [2020-10-14 09:20:06,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:06,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:06,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:06,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:06,373 INFO L87 Difference]: Start difference. First operand 511 states and 779 transitions. Second operand 4 states. [2020-10-14 09:20:06,543 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 09:20:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:07,384 INFO L93 Difference]: Finished difference Result 1341 states and 2089 transitions. [2020-10-14 09:20:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:07,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:20:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:07,394 INFO L225 Difference]: With dead ends: 1341 [2020-10-14 09:20:07,394 INFO L226 Difference]: Without dead ends: 926 [2020-10-14 09:20:07,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-14 09:20:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 924. [2020-10-14 09:20:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-10-14 09:20:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1420 transitions. [2020-10-14 09:20:07,457 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1420 transitions. Word has length 87 [2020-10-14 09:20:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:07,459 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1420 transitions. [2020-10-14 09:20:07,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1420 transitions. [2020-10-14 09:20:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:20:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:07,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:07,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:20:07,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1615328723, now seen corresponding path program 1 times [2020-10-14 09:20:07,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:07,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574272815] [2020-10-14 09:20:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:12,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:12,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:20:12,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:20:12,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:12,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 09:20:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:20:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:12,682 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:12,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:12,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:12,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:20:12,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:12,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:12,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574272815] [2020-10-14 09:20:12,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:12,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:12,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488765072] [2020-10-14 09:20:12,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:12,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:12,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:12,721 INFO L87 Difference]: Start difference. First operand 924 states and 1420 transitions. Second operand 4 states. [2020-10-14 09:20:12,881 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 09:20:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:13,820 INFO L93 Difference]: Finished difference Result 2408 states and 3751 transitions. [2020-10-14 09:20:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:13,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:20:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:13,831 INFO L225 Difference]: With dead ends: 2408 [2020-10-14 09:20:13,831 INFO L226 Difference]: Without dead ends: 1664 [2020-10-14 09:20:13,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-10-14 09:20:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1662. [2020-10-14 09:20:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2020-10-14 09:20:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2551 transitions. [2020-10-14 09:20:13,915 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2551 transitions. Word has length 87 [2020-10-14 09:20:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:13,915 INFO L479 AbstractCegarLoop]: Abstraction has 1662 states and 2551 transitions. [2020-10-14 09:20:13,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2551 transitions. [2020-10-14 09:20:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:20:13,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:13,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:13,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:20:13,921 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:13,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1505392064, now seen corresponding path program 1 times [2020-10-14 09:20:13,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:13,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711689080] [2020-10-14 09:20:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4338 [2020-10-14 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 09:20:18,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:20:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:18,509 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:20:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:18,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:18,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711689080] [2020-10-14 09:20:18,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:18,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:18,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030646997] [2020-10-14 09:20:18,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:18,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:18,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:18,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:18,563 INFO L87 Difference]: Start difference. First operand 1662 states and 2551 transitions. Second operand 4 states. [2020-10-14 09:20:18,801 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 09:20:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:19,742 INFO L93 Difference]: Finished difference Result 4306 states and 6671 transitions. [2020-10-14 09:20:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:19,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:20:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:19,759 INFO L225 Difference]: With dead ends: 4306 [2020-10-14 09:20:19,759 INFO L226 Difference]: Without dead ends: 2980 [2020-10-14 09:20:19,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-10-14 09:20:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2978. [2020-10-14 09:20:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-14 09:20:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4561 transitions. [2020-10-14 09:20:19,938 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4561 transitions. Word has length 87 [2020-10-14 09:20:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:19,938 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 4561 transitions. [2020-10-14 09:20:19,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4561 transitions. [2020-10-14 09:20:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:20:19,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:19,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:19,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:20:19,943 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:19,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1207924565, now seen corresponding path program 1 times [2020-10-14 09:20:19,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:19,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588697753] [2020-10-14 09:20:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:20:23,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3243 [2020-10-14 09:20:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:23,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 09:20:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:20:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:23,418 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:23,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:23,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:20:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:23,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:23,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588697753] [2020-10-14 09:20:23,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:23,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:23,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082931080] [2020-10-14 09:20:23,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:23,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:23,457 INFO L87 Difference]: Start difference. First operand 2978 states and 4561 transitions. Second operand 4 states. [2020-10-14 09:20:23,618 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 09:20:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:24,653 INFO L93 Difference]: Finished difference Result 7966 states and 12231 transitions. [2020-10-14 09:20:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:24,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:20:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:24,679 INFO L225 Difference]: With dead ends: 7966 [2020-10-14 09:20:24,680 INFO L226 Difference]: Without dead ends: 5444 [2020-10-14 09:20:24,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2020-10-14 09:20:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5442. [2020-10-14 09:20:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5442 states. [2020-10-14 09:20:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5442 states to 5442 states and 8237 transitions. [2020-10-14 09:20:25,026 INFO L78 Accepts]: Start accepts. Automaton has 5442 states and 8237 transitions. Word has length 87 [2020-10-14 09:20:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:25,027 INFO L479 AbstractCegarLoop]: Abstraction has 5442 states and 8237 transitions. [2020-10-14 09:20:25,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5442 states and 8237 transitions. [2020-10-14 09:20:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:20:25,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:25,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:25,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:20:25,034 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:25,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1155069035, now seen corresponding path program 1 times [2020-10-14 09:20:25,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:25,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960629463] [2020-10-14 09:20:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:25,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3506 [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:28,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:20:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:20:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:28,733 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:20:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:28,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960629463] [2020-10-14 09:20:28,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:28,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:28,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137158404] [2020-10-14 09:20:28,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:28,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:28,762 INFO L87 Difference]: Start difference. First operand 5442 states and 8237 transitions. Second operand 4 states. [2020-10-14 09:20:28,927 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 09:20:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:30,012 INFO L93 Difference]: Finished difference Result 14996 states and 22687 transitions. [2020-10-14 09:20:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:30,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:20:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:30,063 INFO L225 Difference]: With dead ends: 14996 [2020-10-14 09:20:30,063 INFO L226 Difference]: Without dead ends: 10002 [2020-10-14 09:20:30,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2020-10-14 09:20:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 10000. [2020-10-14 09:20:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10000 states. [2020-10-14 09:20:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 14901 transitions. [2020-10-14 09:20:30,619 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 14901 transitions. Word has length 87 [2020-10-14 09:20:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:30,620 INFO L479 AbstractCegarLoop]: Abstraction has 10000 states and 14901 transitions. [2020-10-14 09:20:30,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 14901 transitions. [2020-10-14 09:20:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:20:30,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:30,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:30,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:20:30,627 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:30,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1271168714, now seen corresponding path program 1 times [2020-10-14 09:20:30,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:30,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088096505] [2020-10-14 09:20:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:30,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:33,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:33,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:20:33,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-10-14 09:20:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:33,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:20:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:20:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 09:20:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:33,238 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:33,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:33,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:33,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:20:33,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:33,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:33,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088096505] [2020-10-14 09:20:33,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:33,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:20:33,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424184719] [2020-10-14 09:20:33,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:20:33,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:33,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:20:33,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:33,268 INFO L87 Difference]: Start difference. First operand 10000 states and 14901 transitions. Second operand 6 states. [2020-10-14 09:20:33,439 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 09:20:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:37,460 INFO L93 Difference]: Finished difference Result 74669 states and 111930 transitions. [2020-10-14 09:20:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:20:37,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:20:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:37,640 INFO L225 Difference]: With dead ends: 74669 [2020-10-14 09:20:37,640 INFO L226 Difference]: Without dead ends: 65280 [2020-10-14 09:20:37,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:20:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65280 states. [2020-10-14 09:20:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65280 to 37086. [2020-10-14 09:20:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37086 states. [2020-10-14 09:20:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37086 states to 37086 states and 55295 transitions. [2020-10-14 09:20:40,462 INFO L78 Accepts]: Start accepts. Automaton has 37086 states and 55295 transitions. Word has length 88 [2020-10-14 09:20:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:40,462 INFO L479 AbstractCegarLoop]: Abstraction has 37086 states and 55295 transitions. [2020-10-14 09:20:40,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:20:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37086 states and 55295 transitions. [2020-10-14 09:20:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:20:40,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:40,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:40,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:20:40,482 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -853581799, now seen corresponding path program 1 times [2020-10-14 09:20:40,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:40,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316666864] [2020-10-14 09:20:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:40,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 09:20:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:42,744 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:20:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:42,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:42,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:20:42,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:42,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:42,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316666864] [2020-10-14 09:20:42,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:42,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:20:42,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131492767] [2020-10-14 09:20:42,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:20:42,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:20:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:42,766 INFO L87 Difference]: Start difference. First operand 37086 states and 55295 transitions. Second operand 6 states. [2020-10-14 09:20:42,933 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 09:20:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:53,661 INFO L93 Difference]: Finished difference Result 309789 states and 462486 transitions. [2020-10-14 09:20:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:20:53,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:20:53,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:54,339 INFO L225 Difference]: With dead ends: 309789 [2020-10-14 09:20:54,340 INFO L226 Difference]: Without dead ends: 274204 [2020-10-14 09:20:54,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:20:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274204 states. [2020-10-14 09:21:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274204 to 140118. [2020-10-14 09:21:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140118 states. [2020-10-14 09:21:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140118 states to 140118 states and 208433 transitions. [2020-10-14 09:21:03,467 INFO L78 Accepts]: Start accepts. Automaton has 140118 states and 208433 transitions. Word has length 88 [2020-10-14 09:21:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:03,467 INFO L479 AbstractCegarLoop]: Abstraction has 140118 states and 208433 transitions. [2020-10-14 09:21:03,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:21:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 140118 states and 208433 transitions. [2020-10-14 09:21:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:21:03,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:03,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:03,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:21:03,526 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1419348692, now seen corresponding path program 1 times [2020-10-14 09:21:03,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:03,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696616506] [2020-10-14 09:21:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:21:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:21:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:05,740 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:21:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:05,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:21:05,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:05,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:05,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696616506] [2020-10-14 09:21:05,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:05,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:21:05,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902259914] [2020-10-14 09:21:05,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:21:05,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:05,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:21:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:05,762 INFO L87 Difference]: Start difference. First operand 140118 states and 208433 transitions. Second operand 6 states. [2020-10-14 09:21:05,932 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 09:21:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:52,382 INFO L93 Difference]: Finished difference Result 1194803 states and 1776576 transitions. [2020-10-14 09:21:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:21:52,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:21:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:54,104 INFO L225 Difference]: With dead ends: 1194803 [2020-10-14 09:21:54,104 INFO L226 Difference]: Without dead ends: 1058600 [2020-10-14 09:21:54,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:21:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058600 states. [2020-10-14 09:22:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058600 to 535274. [2020-10-14 09:22:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535274 states. [2020-10-14 09:22:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535274 states to 535274 states and 793219 transitions. [2020-10-14 09:22:43,623 INFO L78 Accepts]: Start accepts. Automaton has 535274 states and 793219 transitions. Word has length 88 [2020-10-14 09:22:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:43,623 INFO L479 AbstractCegarLoop]: Abstraction has 535274 states and 793219 transitions. [2020-10-14 09:22:43,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:22:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 535274 states and 793219 transitions. [2020-10-14 09:22:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:22:43,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:43,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:43,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:22:43,711 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:43,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1234870011, now seen corresponding path program 1 times [2020-10-14 09:22:43,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:43,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857957173] [2020-10-14 09:22:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3184 [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:46,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:22:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:22:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:22:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:47,084 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 09:22:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:47,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:47,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:47,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:47,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857957173] [2020-10-14 09:22:47,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:47,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:22:47,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468854456] [2020-10-14 09:22:47,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:22:47,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:47,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:22:47,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:47,114 INFO L87 Difference]: Start difference. First operand 535274 states and 793219 transitions. Second operand 6 states. [2020-10-14 09:22:47,295 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 146