/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=NARROWEST --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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:11:32,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:11:32,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:11:32,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:11:32,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:11:32,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:11:32,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:11:32,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:11:32,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:11:32,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:11:32,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:11:32,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:11:32,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:11:32,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:11:32,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:11:32,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:11:32,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:11:32,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:11:32,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:11:32,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:11:32,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:11:32,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:11:32,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:11:32,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:11:32,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:11:32,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:11:32,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:11:32,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:11:32,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:11:32,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:11:32,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:11:32,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:11:32,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:11:32,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:11:32,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:11:32,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:11:32,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:11:32,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:11:32,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:11:32,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:11:32,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:11:32,807 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 [2020-10-13 15:11:32,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:11:32,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:11:32,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:11:32,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:11:32,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:11:32,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:11:32,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:11:32,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:11:32,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:11:32,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:11:32,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:11:32,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:11:32,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:11:32,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:11:32,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:11:32,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:11:32,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:11:32,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:11:32,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:11:32,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:11:32,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:11:32,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:11:32,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:11:32,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:11:32,835 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:11:33,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:11:33,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:11:33,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:11:33,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:11:33,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:11:33,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:33,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a510a780/cc29dda8162c4194be5b1fdc843d7475/FLAG34c6ec262 [2020-10-13 15:11:33,878 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:11:33,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:33,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a510a780/cc29dda8162c4194be5b1fdc843d7475/FLAG34c6ec262 [2020-10-13 15:11:33,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a510a780/cc29dda8162c4194be5b1fdc843d7475 [2020-10-13 15:11:33,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:11:33,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:11:33,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:33,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:11:33,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:11:33,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:33" (1/1) ... [2020-10-13 15:11:33,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5595037b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:33, skipping insertion in model container [2020-10-13 15:11:33,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:33" (1/1) ... [2020-10-13 15:11:34,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:11:34,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:11:34,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:34,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:11:35,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:35,349 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:11:35,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35 WrapperNode [2020-10-13 15:11:35,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:35,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:11:35,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:11:35,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:11:35,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (1/1) ... [2020-10-13 15:11:35,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:11:35,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:11:35,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:11:35,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:11:35,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (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 [2020-10-13 15:11:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:11:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:11:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:11:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:11:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:11:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:11:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:11:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:11:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:11:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:11:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:11:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:11:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:11:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:11:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:11:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:11:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:11:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:11:37,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:11:37,899 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:11:37,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:11:37 BoogieIcfgContainer [2020-10-13 15:11:37,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:11:37,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:11:37,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:11:37,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:11:37,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:11:33" (1/3) ... [2020-10-13 15:11:37,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135a5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:11:37, skipping insertion in model container [2020-10-13 15:11:37,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:35" (2/3) ... [2020-10-13 15:11:37,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135a5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:11:37, skipping insertion in model container [2020-10-13 15:11:37,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:11:37" (3/3) ... [2020-10-13 15:11:37,915 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:37,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:11:37,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:11:37,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:11:37,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:11:37,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:11:37,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:11:37,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:11:37,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:11:37,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:11:37,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:11:37,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:11:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-13 15:11:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 15:11:38,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:38,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:38,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-13 15:11:38,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:38,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538790360] [2020-10-13 15:11:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 15:11:43,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:11:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 15:11:43,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:11:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 15:11:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:11:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:11:45,135 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:45,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:11:45,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:45,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538790360] [2020-10-13 15:11:45,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:45,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:11:45,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382151181] [2020-10-13 15:11:45,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:11:45,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:45,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:11:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:11:45,318 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 8 states. [2020-10-13 15:11:46,173 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 392 [2020-10-13 15:11:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:52,503 INFO L93 Difference]: Finished difference Result 3005 states and 5196 transitions. [2020-10-13 15:11:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:11:52,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-13 15:11:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:52,554 INFO L225 Difference]: With dead ends: 3005 [2020-10-13 15:11:52,554 INFO L226 Difference]: Without dead ends: 2742 [2020-10-13 15:11:52,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:11:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-10-13 15:11:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 988. [2020-10-13 15:11:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-10-13 15:11:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1715 transitions. [2020-10-13 15:11:52,809 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1715 transitions. Word has length 217 [2020-10-13 15:11:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:52,813 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1715 transitions. [2020-10-13 15:11:52,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:11:52,814 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1715 transitions. [2020-10-13 15:11:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 15:11:52,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:52,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:52,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:11:52,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash 69609569, now seen corresponding path program 1 times [2020-10-13 15:11:52,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:52,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556828660] [2020-10-13 15:11:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:58,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 15:11:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 15:11:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:11:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:11:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:11:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:59,130 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:59,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:59,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 15:11:59,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:59,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556828660] [2020-10-13 15:11:59,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:59,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:11:59,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786583799] [2020-10-13 15:11:59,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:11:59,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:59,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:11:59,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:11:59,281 INFO L87 Difference]: Start difference. First operand 988 states and 1715 transitions. Second operand 9 states. [2020-10-13 15:12:00,339 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 15:12:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:07,794 INFO L93 Difference]: Finished difference Result 7150 states and 12173 transitions. [2020-10-13 15:12:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:12:07,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-10-13 15:12:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:07,831 INFO L225 Difference]: With dead ends: 7150 [2020-10-13 15:12:07,832 INFO L226 Difference]: Without dead ends: 6714 [2020-10-13 15:12:07,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:12:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2020-10-13 15:12:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 2205. [2020-10-13 15:12:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-10-13 15:12:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3782 transitions. [2020-10-13 15:12:08,001 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3782 transitions. Word has length 218 [2020-10-13 15:12:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:08,002 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 3782 transitions. [2020-10-13 15:12:08,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:12:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3782 transitions. [2020-10-13 15:12:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 15:12:08,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:08,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:08,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:12:08,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2091728673, now seen corresponding path program 1 times [2020-10-13 15:12:08,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:08,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378105569] [2020-10-13 15:12:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 15:12:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 15:12:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:12:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:13,990 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:14,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:14,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:14,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:12:14,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:14,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:14,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378105569] [2020-10-13 15:12:14,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:14,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:14,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775580908] [2020-10-13 15:12:14,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:14,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:14,160 INFO L87 Difference]: Start difference. First operand 2205 states and 3782 transitions. Second operand 5 states. [2020-10-13 15:12:14,853 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:19,478 INFO L93 Difference]: Finished difference Result 6742 states and 11491 transitions. [2020-10-13 15:12:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:19,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 15:12:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:19,506 INFO L225 Difference]: With dead ends: 6742 [2020-10-13 15:12:19,506 INFO L226 Difference]: Without dead ends: 5261 [2020-10-13 15:12:19,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2020-10-13 15:12:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 3771. [2020-10-13 15:12:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-13 15:12:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6440 transitions. [2020-10-13 15:12:19,768 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6440 transitions. Word has length 219 [2020-10-13 15:12:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:19,770 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 6440 transitions. [2020-10-13 15:12:19,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6440 transitions. [2020-10-13 15:12:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 15:12:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:19,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:19,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:12:19,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash 357469480, now seen corresponding path program 1 times [2020-10-13 15:12:19,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:19,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201954028] [2020-10-13 15:12:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:24,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:24,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 15:12:24,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:12:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-13 15:12:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:25,601 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:25,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:25,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:25,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:12:25,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:25,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201954028] [2020-10-13 15:12:25,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:25,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:25,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031129067] [2020-10-13 15:12:25,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:25,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:25,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:25,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:25,697 INFO L87 Difference]: Start difference. First operand 3771 states and 6440 transitions. Second operand 5 states. [2020-10-13 15:12:26,436 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:31,226 INFO L93 Difference]: Finished difference Result 12738 states and 21665 transitions. [2020-10-13 15:12:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:31,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 15:12:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:31,274 INFO L225 Difference]: With dead ends: 12738 [2020-10-13 15:12:31,275 INFO L226 Difference]: Without dead ends: 9785 [2020-10-13 15:12:31,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9785 states. [2020-10-13 15:12:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9785 to 6816. [2020-10-13 15:12:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6816 states. [2020-10-13 15:12:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 11602 transitions. [2020-10-13 15:12:31,845 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 11602 transitions. Word has length 220 [2020-10-13 15:12:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:31,846 INFO L479 AbstractCegarLoop]: Abstraction has 6816 states and 11602 transitions. [2020-10-13 15:12:31,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 11602 transitions. [2020-10-13 15:12:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 15:12:31,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:31,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:31,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:12:31,852 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1860399928, now seen corresponding path program 1 times [2020-10-13 15:12:31,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:31,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143543615] [2020-10-13 15:12:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 15:12:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:37,792 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:12:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:37,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143543615] [2020-10-13 15:12:37,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:37,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:37,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884717019] [2020-10-13 15:12:37,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:37,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:37,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:37,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:37,870 INFO L87 Difference]: Start difference. First operand 6816 states and 11602 transitions. Second operand 5 states. [2020-10-13 15:12:38,575 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:43,604 INFO L93 Difference]: Finished difference Result 24542 states and 41669 transitions. [2020-10-13 15:12:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:43,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 15:12:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:43,648 INFO L225 Difference]: With dead ends: 24542 [2020-10-13 15:12:43,648 INFO L226 Difference]: Without dead ends: 18652 [2020-10-13 15:12:43,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18652 states. [2020-10-13 15:12:44,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18652 to 12732. [2020-10-13 15:12:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12732 states. [2020-10-13 15:12:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 21618 transitions. [2020-10-13 15:12:44,428 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 21618 transitions. Word has length 221 [2020-10-13 15:12:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:44,428 INFO L479 AbstractCegarLoop]: Abstraction has 12732 states and 21618 transitions. [2020-10-13 15:12:44,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 21618 transitions. [2020-10-13 15:12:44,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 15:12:44,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:44,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:44,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:12:44,436 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:44,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1890316817, now seen corresponding path program 1 times [2020-10-13 15:12:44,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:44,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602001918] [2020-10-13 15:12:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:49,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:49,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 15:12:49,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:49,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:12:49,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 15:12:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:50,235 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:50,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:50,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:50,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602001918] [2020-10-13 15:12:50,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:50,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:50,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142612797] [2020-10-13 15:12:50,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:50,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:50,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:50,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:50,301 INFO L87 Difference]: Start difference. First operand 12732 states and 21618 transitions. Second operand 5 states. [2020-10-13 15:12:51,003 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:56,838 INFO L93 Difference]: Finished difference Result 47982 states and 81333 transitions. [2020-10-13 15:12:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:56,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-13 15:12:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:56,918 INFO L225 Difference]: With dead ends: 47982 [2020-10-13 15:12:56,918 INFO L226 Difference]: Without dead ends: 36232 [2020-10-13 15:12:56,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36232 states. [2020-10-13 15:12:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36232 to 24424. [2020-10-13 15:12:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24424 states. [2020-10-13 15:12:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24424 states to 24424 states and 41378 transitions. [2020-10-13 15:12:58,317 INFO L78 Accepts]: Start accepts. Automaton has 24424 states and 41378 transitions. Word has length 222 [2020-10-13 15:12:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:58,317 INFO L479 AbstractCegarLoop]: Abstraction has 24424 states and 41378 transitions. [2020-10-13 15:12:58,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 24424 states and 41378 transitions. [2020-10-13 15:12:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:12:58,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:58,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:58,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:12:58,324 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2136680137, now seen corresponding path program 1 times [2020-10-13 15:12:58,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:58,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615116806] [2020-10-13 15:12:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:03,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:03,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:13:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:04,096 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:13:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:04,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615116806] [2020-10-13 15:13:04,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:04,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:04,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313874972] [2020-10-13 15:13:04,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:04,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:04,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:04,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:04,166 INFO L87 Difference]: Start difference. First operand 24424 states and 41378 transitions. Second operand 4 states. [2020-10-13 15:13:04,869 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:13:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:12,611 INFO L93 Difference]: Finished difference Result 67491 states and 114199 transitions. [2020-10-13 15:13:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:12,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:13:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:12,675 INFO L225 Difference]: With dead ends: 67491 [2020-10-13 15:13:12,675 INFO L226 Difference]: Without dead ends: 43647 [2020-10-13 15:13:12,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43647 states. [2020-10-13 15:13:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43647 to 43645. [2020-10-13 15:13:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43645 states. [2020-10-13 15:13:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43645 states to 43645 states and 73725 transitions. [2020-10-13 15:13:16,324 INFO L78 Accepts]: Start accepts. Automaton has 43645 states and 73725 transitions. Word has length 223 [2020-10-13 15:13:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:16,324 INFO L479 AbstractCegarLoop]: Abstraction has 43645 states and 73725 transitions. [2020-10-13 15:13:16,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 43645 states and 73725 transitions. [2020-10-13 15:13:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:13:16,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:16,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:16,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:13:16,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1568447499, now seen corresponding path program 1 times [2020-10-13 15:13:16,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:16,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147750030] [2020-10-13 15:13:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:21,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:13:21,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:13:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:22,273 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:13:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:22,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147750030] [2020-10-13 15:13:22,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:22,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:22,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362174413] [2020-10-13 15:13:22,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:22,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:22,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:22,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:22,338 INFO L87 Difference]: Start difference. First operand 43645 states and 73725 transitions. Second operand 4 states. [2020-10-13 15:13:23,029 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:13:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:31,756 INFO L93 Difference]: Finished difference Result 120727 states and 203689 transitions. [2020-10-13 15:13:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:31,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:13:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:31,896 INFO L225 Difference]: With dead ends: 120727 [2020-10-13 15:13:31,896 INFO L226 Difference]: Without dead ends: 77759 [2020-10-13 15:13:31,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77759 states. [2020-10-13 15:13:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77759 to 77757. [2020-10-13 15:13:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77757 states. [2020-10-13 15:13:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77757 states to 77757 states and 130915 transitions. [2020-10-13 15:13:37,867 INFO L78 Accepts]: Start accepts. Automaton has 77757 states and 130915 transitions. Word has length 223 [2020-10-13 15:13:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:37,868 INFO L479 AbstractCegarLoop]: Abstraction has 77757 states and 130915 transitions. [2020-10-13 15:13:37,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 77757 states and 130915 transitions. [2020-10-13 15:13:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:13:37,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:37,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:37,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:13:37,871 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1316707105, now seen corresponding path program 1 times [2020-10-13 15:13:37,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:37,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946305126] [2020-10-13 15:13:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:38,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:13:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:43,699 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:13:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:43,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:43,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:13:43,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:43,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946305126] [2020-10-13 15:13:43,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:43,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:43,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216409073] [2020-10-13 15:13:43,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:43,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:43,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:43,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:43,790 INFO L87 Difference]: Start difference. First operand 77757 states and 130915 transitions. Second operand 4 states. [2020-10-13 15:13:44,483 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:13:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:58,084 INFO L93 Difference]: Finished difference Result 214849 states and 361253 transitions. [2020-10-13 15:13:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:58,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:13:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:58,317 INFO L225 Difference]: With dead ends: 214849 [2020-10-13 15:13:58,317 INFO L226 Difference]: Without dead ends: 137859 [2020-10-13 15:13:58,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137859 states. [2020-10-13 15:14:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137859 to 137793. [2020-10-13 15:14:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137793 states. [2020-10-13 15:14:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137793 states to 137793 states and 231113 transitions. [2020-10-13 15:14:07,834 INFO L78 Accepts]: Start accepts. Automaton has 137793 states and 231113 transitions. Word has length 223 [2020-10-13 15:14:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:14:07,835 INFO L479 AbstractCegarLoop]: Abstraction has 137793 states and 231113 transitions. [2020-10-13 15:14:07,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:14:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 137793 states and 231113 transitions. [2020-10-13 15:14:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:14:07,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:14:07,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:14:07,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:14:07,839 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:14:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:14:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1047992245, now seen corresponding path program 1 times [2020-10-13 15:14:07,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:14:07,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330704349] [2020-10-13 15:14:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:14:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:14:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 15:14:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:14:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:13,628 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:14:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:14:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:14:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:14:13,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330704349] [2020-10-13 15:14:13,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:14:13,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:14:13,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844660342] [2020-10-13 15:14:13,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:14:13,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:14:13,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:14:13,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:14:13,696 INFO L87 Difference]: Start difference. First operand 137793 states and 231113 transitions. Second operand 4 states. [2020-10-13 15:14:14,543 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:14:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:14:32,169 INFO L93 Difference]: Finished difference Result 378373 states and 633547 transitions. [2020-10-13 15:14:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:14:32,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:14:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:14:32,498 INFO L225 Difference]: With dead ends: 378373 [2020-10-13 15:14:32,498 INFO L226 Difference]: Without dead ends: 241261 [2020-10-13 15:14:32,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:14:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241261 states. [2020-10-13 15:14:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241261 to 241171. [2020-10-13 15:14:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241171 states. [2020-10-13 15:14:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241171 states to 241171 states and 402578 transitions. [2020-10-13 15:14:50,172 INFO L78 Accepts]: Start accepts. Automaton has 241171 states and 402578 transitions. Word has length 223 [2020-10-13 15:14:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:14:50,172 INFO L479 AbstractCegarLoop]: Abstraction has 241171 states and 402578 transitions. [2020-10-13 15:14:50,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:14:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 241171 states and 402578 transitions. [2020-10-13 15:14:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:14:50,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:14:50,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:14:50,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:14:50,176 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:14:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:14:50,176 INFO L82 PathProgramCache]: Analyzing trace with hash -849752545, now seen corresponding path program 1 times [2020-10-13 15:14:50,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:14:50,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599628952] [2020-10-13 15:14:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:14:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:50,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:55,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:14:55,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5610 [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:14:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:56,561 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:14:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:14:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:56,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:14:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:14:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:14:56,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599628952] [2020-10-13 15:14:56,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:14:56,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:14:56,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945214019] [2020-10-13 15:14:56,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:14:56,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:14:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:14:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:14:56,627 INFO L87 Difference]: Start difference. First operand 241171 states and 402578 transitions. Second operand 4 states. [2020-10-13 15:14:57,334 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 386