/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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:14:23,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:14:23,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:14:23,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:14:23,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:14:23,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:14:23,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:14:23,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:14:23,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:14:23,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:14:23,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:14:23,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:14:23,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:14:23,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:14:23,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:14:23,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:14:23,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:14:23,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:14:23,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:14:23,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:14:23,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:14:23,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:14:23,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:14:23,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:14:23,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:14:23,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:14:23,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:14:23,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:14:23,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:14:23,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:14:23,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:14:23,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:14:23,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:14:23,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:14:23,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:14:23,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:14:23,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:14:23,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:14:23,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:14:23,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:14:23,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:14:23,941 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 09:14:23,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:14:23,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:14:23,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:14:23,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:14:23,995 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:14:23,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:14:23,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:14:23,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:14:23,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:14:23,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:14:23,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:14:23,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:14:23,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:14:23,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:14:23,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:14:23,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:14:23,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:14:24,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:14:24,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:14:24,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:14:24,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:14:24,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:14:24,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:14:24,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:14:24,001 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 09:14:24,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:14:24,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:14:24,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:14:24,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:14:24,357 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:14:24,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:14:24,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f83d18540/65d097346fdd4e1e838fbffc16e6a568/FLAG3826e628e [2020-10-14 09:14:25,240 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:14:25,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:14:25,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f83d18540/65d097346fdd4e1e838fbffc16e6a568/FLAG3826e628e [2020-10-14 09:14:25,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f83d18540/65d097346fdd4e1e838fbffc16e6a568 [2020-10-14 09:14:25,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:14:25,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:14:25,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:14:25,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:14:25,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:14:25,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:25" (1/1) ... [2020-10-14 09:14:25,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d729d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:25, skipping insertion in model container [2020-10-14 09:14:25,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:25" (1/1) ... [2020-10-14 09:14:25,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:14:26,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:14:28,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:14:28,021 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:14:28,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:14:28,973 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:14:28,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28 WrapperNode [2020-10-14 09:14:28,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:14:28,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:14:28,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:14:28,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:14:28,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:28,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (1/1) ... [2020-10-14 09:14:29,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:14:29,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:14:29,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:14:29,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:14:29,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (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 09:14:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:14:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:14:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:14:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:14:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:14:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:14:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:14:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:14:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:14:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:14:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:14:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:14:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:14:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:14:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:14:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:14:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:14:37,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:14:37,625 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:14:37,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:37 BoogieIcfgContainer [2020-10-14 09:14:37,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:14:37,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:14:37,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:14:37,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:14:37,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:25" (1/3) ... [2020-10-14 09:14:37,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708d9289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:37, skipping insertion in model container [2020-10-14 09:14:37,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:28" (2/3) ... [2020-10-14 09:14:37,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708d9289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:37, skipping insertion in model container [2020-10-14 09:14:37,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:37" (3/3) ... [2020-10-14 09:14:37,659 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:14:37,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:14:37,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-14 09:14:37,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-14 09:14:37,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:14:37,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:14:37,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:14:37,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:14:37,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:14:37,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:14:37,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:14:37,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:14:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states. [2020-10-14 09:14:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:14:37,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:37,887 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] [2020-10-14 09:14:37,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash -556660971, now seen corresponding path program 1 times [2020-10-14 09:14:37,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:37,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958568354] [2020-10-14 09:14:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:39,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:43,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:14:43,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:14:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-14 09:14:43,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:43,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:14:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:14:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:14:46,162 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:14:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:46,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:46,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:46,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 09:14:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:46,303 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 09:14:46,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958568354] [2020-10-14 09:14:46,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:46,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:14:46,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572843281] [2020-10-14 09:14:46,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:46,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:46,330 INFO L87 Difference]: Start difference. First operand 3537 states. Second operand 6 states. [2020-10-14 09:14:48,585 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-14 09:15:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:33,668 INFO L93 Difference]: Finished difference Result 9123 states and 16153 transitions. [2020-10-14 09:15:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:15:33,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:15:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:33,724 INFO L225 Difference]: With dead ends: 9123 [2020-10-14 09:15:33,724 INFO L226 Difference]: Without dead ends: 6233 [2020-10-14 09:15:33,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:15:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2020-10-14 09:15:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 5967. [2020-10-14 09:15:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5967 states. [2020-10-14 09:15:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 7873 transitions. [2020-10-14 09:15:34,026 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 7873 transitions. Word has length 68 [2020-10-14 09:15:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:34,027 INFO L479 AbstractCegarLoop]: Abstraction has 5967 states and 7873 transitions. [2020-10-14 09:15:34,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 7873 transitions. [2020-10-14 09:15:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:15:34,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:34,048 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] [2020-10-14 09:15:34,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:15:34,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1406477790, now seen corresponding path program 1 times [2020-10-14 09:15:34,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:34,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147020156] [2020-10-14 09:15:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:35,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:15:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:15:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 09:15:39,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:39,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:15:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:15:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:15:41,626 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:15:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:41,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:41,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:41,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:15:41,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:41,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:15:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:15:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:15:41,717 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 09:15:41,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147020156] [2020-10-14 09:15:41,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:41,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:15:41,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275356572] [2020-10-14 09:15:41,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:41,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:41,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:41,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:41,721 INFO L87 Difference]: Start difference. First operand 5967 states and 7873 transitions. Second operand 6 states. [2020-10-14 09:15:43,891 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-14 09:16:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:16,797 INFO L93 Difference]: Finished difference Result 6409 states and 8505 transitions. [2020-10-14 09:16:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:16:16,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:16:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:16,827 INFO L225 Difference]: With dead ends: 6409 [2020-10-14 09:16:16,827 INFO L226 Difference]: Without dead ends: 6214 [2020-10-14 09:16:16,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:16:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2020-10-14 09:16:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5956. [2020-10-14 09:16:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2020-10-14 09:16:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 7857 transitions. [2020-10-14 09:16:16,995 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 7857 transitions. Word has length 68 [2020-10-14 09:16:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:16,996 INFO L479 AbstractCegarLoop]: Abstraction has 5956 states and 7857 transitions. [2020-10-14 09:16:16,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:16:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 7857 transitions. [2020-10-14 09:16:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:16:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:17,010 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] [2020-10-14 09:16:17,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:16:17,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:17,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:17,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1269419232, now seen corresponding path program 1 times [2020-10-14 09:16:17,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:17,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137405508] [2020-10-14 09:16:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:22,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:22,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:16:22,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:16:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:16:22,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:22,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:16:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:16:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 09:16:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:24,512 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:16:24,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 09:16:24,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:24,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:16:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:24,661 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 09:16:24,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137405508] [2020-10-14 09:16:24,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:24,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:16:24,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374991484] [2020-10-14 09:16:24,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:16:24,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:24,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:16:24,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:16:24,664 INFO L87 Difference]: Start difference. First operand 5956 states and 7857 transitions. Second operand 6 states. [2020-10-14 09:16:27,046 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 742 [2020-10-14 09:16:55,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:55,012 INFO L93 Difference]: Finished difference Result 11087 states and 14745 transitions. [2020-10-14 09:16:55,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:16:55,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:16:55,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:55,042 INFO L225 Difference]: With dead ends: 11087 [2020-10-14 09:16:55,043 INFO L226 Difference]: Without dead ends: 7447 [2020-10-14 09:16:55,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:16:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2020-10-14 09:16:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 7420. [2020-10-14 09:16:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7420 states. [2020-10-14 09:16:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 9904 transitions. [2020-10-14 09:16:55,290 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 9904 transitions. Word has length 69 [2020-10-14 09:16:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:55,291 INFO L479 AbstractCegarLoop]: Abstraction has 7420 states and 9904 transitions. [2020-10-14 09:16:55,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:16:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 9904 transitions. [2020-10-14 09:16:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:16:55,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:55,311 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] [2020-10-14 09:16:55,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:16:55,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash 213915187, now seen corresponding path program 1 times [2020-10-14 09:16:55,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:55,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119796086] [2020-10-14 09:16:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:00,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:17:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:17:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:17:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:17:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:17:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:02,777 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:17:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:02,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:17:02,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:02,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:02,859 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 09:17:02,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119796086] [2020-10-14 09:17:02,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:02,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:02,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357713094] [2020-10-14 09:17:02,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:02,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:02,862 INFO L87 Difference]: Start difference. First operand 7420 states and 9904 transitions. Second operand 4 states. [2020-10-14 09:17:05,045 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-14 09:17:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:25,622 INFO L93 Difference]: Finished difference Result 10572 states and 14375 transitions. [2020-10-14 09:17:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:25,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:17:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:25,660 INFO L225 Difference]: With dead ends: 10572 [2020-10-14 09:17:25,661 INFO L226 Difference]: Without dead ends: 7506 [2020-10-14 09:17:25,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2020-10-14 09:17:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 7480. [2020-10-14 09:17:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7480 states. [2020-10-14 09:17:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 10096 transitions. [2020-10-14 09:17:25,885 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 10096 transitions. Word has length 69 [2020-10-14 09:17:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:25,887 INFO L479 AbstractCegarLoop]: Abstraction has 7480 states and 10096 transitions. [2020-10-14 09:17:25,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 10096 transitions. [2020-10-14 09:17:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:17:25,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:25,899 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] [2020-10-14 09:17:25,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:17:25,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash -181885345, now seen corresponding path program 1 times [2020-10-14 09:17:25,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:25,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051201283] [2020-10-14 09:17:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:17:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:17:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:17:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:30,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:17:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:17:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:17:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:33,574 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:17:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:33,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:33,640 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 09:17:33,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051201283] [2020-10-14 09:17:33,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:33,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:17:33,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391047703] [2020-10-14 09:17:33,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:17:33,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:33,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:17:33,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:33,643 INFO L87 Difference]: Start difference. First operand 7480 states and 10096 transitions. Second operand 6 states. [2020-10-14 09:17:35,959 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-14 09:18:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:03,161 INFO L93 Difference]: Finished difference Result 8866 states and 12189 transitions. [2020-10-14 09:18:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:18:03,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:18:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:03,182 INFO L225 Difference]: With dead ends: 8866 [2020-10-14 09:18:03,182 INFO L226 Difference]: Without dead ends: 8213 [2020-10-14 09:18:03,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:18:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2020-10-14 09:18:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7465. [2020-10-14 09:18:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7465 states. [2020-10-14 09:18:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 10076 transitions. [2020-10-14 09:18:03,421 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 10076 transitions. Word has length 69 [2020-10-14 09:18:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:03,423 INFO L479 AbstractCegarLoop]: Abstraction has 7465 states and 10076 transitions. [2020-10-14 09:18:03,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:18:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 10076 transitions. [2020-10-14 09:18:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:18:03,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:03,434 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] [2020-10-14 09:18:03,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:18:03,434 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:03,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1758010112, now seen corresponding path program 1 times [2020-10-14 09:18:03,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:03,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953422468] [2020-10-14 09:18:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:18:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:18:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:18:08,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:10,922 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-14 09:18:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:11,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 09:18:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:11,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:18:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:11,069 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 09:18:11,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953422468] [2020-10-14 09:18:11,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:11,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:18:11,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046138018] [2020-10-14 09:18:11,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:18:11,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:18:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:18:11,072 INFO L87 Difference]: Start difference. First operand 7465 states and 10076 transitions. Second operand 6 states.