/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=BIGGEST --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.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:27:12,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:27:12,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:27:12,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:27:12,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:27:12,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:27:12,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:27:12,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:27:12,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:27:12,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:27:12,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:27:12,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:27:12,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:27:12,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:27:12,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:27:12,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:27:12,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:27:12,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:27:12,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:27:12,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:27:12,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:27:12,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:27:12,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:27:12,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:27:12,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:27:12,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:27:12,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:27:12,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:27:12,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:27:12,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:27:12,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:27:12,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:27:12,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:27:12,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:27:13,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:27:13,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:27:13,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:27:13,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:27:13,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:27:13,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:27:13,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:27:13,017 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 [2020-10-12 20:27:13,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:27:13,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:27:13,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:27:13,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:27:13,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:27:13,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:27:13,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:27:13,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:27:13,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:27:13,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:27:13,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:27:13,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:27:13,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:27:13,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:27:13,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:27:13,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:27:13,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:27:13,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:27:13,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:27:13,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:27:13,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:27:13,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:27:13,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:27:13,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:27:13,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:27:13,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:27:13,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:27:13,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:27:13,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:27:13,072 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:27:13,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:27:13,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:27:13,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:27:13,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:27:13,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:27:13,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:27:13,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/830a9ff6c/d4f0b34ccf29473cafda045544f9e041/FLAGca98420c9 [2020-10-12 20:27:14,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:27:14,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:27:14,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/830a9ff6c/d4f0b34ccf29473cafda045544f9e041/FLAGca98420c9 [2020-10-12 20:27:14,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/830a9ff6c/d4f0b34ccf29473cafda045544f9e041 [2020-10-12 20:27:14,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:27:14,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:27:14,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:27:14,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:27:14,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:27:14,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:27:14" (1/1) ... [2020-10-12 20:27:14,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19214a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:14, skipping insertion in model container [2020-10-12 20:27:14,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:27:14" (1/1) ... [2020-10-12 20:27:14,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:27:14,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:27:14,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:27:14,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:27:15,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:27:15,174 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:27:15,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15 WrapperNode [2020-10-12 20:27:15,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:27:15,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:27:15,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:27:15,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:27:15,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (1/1) ... [2020-10-12 20:27:15,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:27:15,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:27:15,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:27:15,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:27:15,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (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 [2020-10-12 20:27:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:27:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:27:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:27:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:27:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:27:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:27:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:27:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:27:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:27:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:27:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:27:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:27:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:27:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:27:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:27:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:27:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:27:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:27:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:27:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:27:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:27:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:27:16,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:27:16,662 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:27:16,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:27:16 BoogieIcfgContainer [2020-10-12 20:27:16,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:27:16,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:27:16,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:27:16,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:27:16,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:27:14" (1/3) ... [2020-10-12 20:27:16,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e72cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:27:16, skipping insertion in model container [2020-10-12 20:27:16,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:15" (2/3) ... [2020-10-12 20:27:16,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e72cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:27:16, skipping insertion in model container [2020-10-12 20:27:16,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:27:16" (3/3) ... [2020-10-12 20:27:16,679 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:27:16,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:27:16,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:27:16,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:27:16,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:27:16,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:27:16,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:27:16,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:27:16,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:27:16,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:27:16,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:27:16,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:27:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-12 20:27:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:27:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:16,794 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] [2020-10-12 20:27:16,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash -273306171, now seen corresponding path program 1 times [2020-10-12 20:27:16,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:16,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964760049] [2020-10-12 20:27:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:27:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 20:27:22,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:27:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:27:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:27:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:27:23,141 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:23,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:23,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:27:23,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:23,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:23,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964760049] [2020-10-12 20:27:23,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:23,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:27:23,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505395046] [2020-10-12 20:27:23,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:27:23,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:23,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:27:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:27:23,255 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 7 states. [2020-10-12 20:27:23,757 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-12 20:27:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:26,619 INFO L93 Difference]: Finished difference Result 1616 states and 2740 transitions. [2020-10-12 20:27:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:27:26,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 20:27:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:26,666 INFO L225 Difference]: With dead ends: 1616 [2020-10-12 20:27:26,666 INFO L226 Difference]: Without dead ends: 1437 [2020-10-12 20:27:26,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:27:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-10-12 20:27:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 505. [2020-10-12 20:27:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-12 20:27:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 836 transitions. [2020-10-12 20:27:26,822 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 836 transitions. Word has length 122 [2020-10-12 20:27:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:26,825 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 836 transitions. [2020-10-12 20:27:26,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:27:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 836 transitions. [2020-10-12 20:27:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:27:26,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:26,834 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] [2020-10-12 20:27:26,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:27:26,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:26,836 INFO L82 PathProgramCache]: Analyzing trace with hash 51275037, now seen corresponding path program 1 times [2020-10-12 20:27:26,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:26,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880484533] [2020-10-12 20:27:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:32,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:32,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:27:32,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:27:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 20:27:32,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:27:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:27:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:27:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:27:32,471 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:32,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:32,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:32,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:27:32,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:32,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880484533] [2020-10-12 20:27:32,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:32,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:27:32,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465695324] [2020-10-12 20:27:32,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:27:32,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:27:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:27:32,536 INFO L87 Difference]: Start difference. First operand 505 states and 836 transitions. Second operand 8 states. [2020-10-12 20:27:32,968 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:27:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:36,456 INFO L93 Difference]: Finished difference Result 3779 states and 6321 transitions. [2020-10-12 20:27:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:27:36,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 20:27:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:36,480 INFO L225 Difference]: With dead ends: 3779 [2020-10-12 20:27:36,480 INFO L226 Difference]: Without dead ends: 3471 [2020-10-12 20:27:36,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:27:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-10-12 20:27:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 1348. [2020-10-12 20:27:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-10-12 20:27:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2249 transitions. [2020-10-12 20:27:36,617 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2249 transitions. Word has length 123 [2020-10-12 20:27:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:36,618 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 2249 transitions. [2020-10-12 20:27:36,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:27:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2249 transitions. [2020-10-12 20:27:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:27:36,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:36,620 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] [2020-10-12 20:27:36,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:27:36,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1527915916, now seen corresponding path program 1 times [2020-10-12 20:27:36,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:36,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398623983] [2020-10-12 20:27:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:38,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:41,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:27:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:27:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:27:41,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:42,229 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:27:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:42,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398623983] [2020-10-12 20:27:42,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:42,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:27:42,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561644173] [2020-10-12 20:27:42,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:27:42,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:27:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:27:42,303 INFO L87 Difference]: Start difference. First operand 1348 states and 2249 transitions. Second operand 8 states. [2020-10-12 20:27:42,751 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:27:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:46,103 INFO L93 Difference]: Finished difference Result 10925 states and 18272 transitions. [2020-10-12 20:27:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:27:46,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-12 20:27:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:46,157 INFO L225 Difference]: With dead ends: 10925 [2020-10-12 20:27:46,157 INFO L226 Difference]: Without dead ends: 9889 [2020-10-12 20:27:46,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:27:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2020-10-12 20:27:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 3819. [2020-10-12 20:27:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3819 states. [2020-10-12 20:27:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 6377 transitions. [2020-10-12 20:27:46,473 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 6377 transitions. Word has length 124 [2020-10-12 20:27:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:46,475 INFO L479 AbstractCegarLoop]: Abstraction has 3819 states and 6377 transitions. [2020-10-12 20:27:46,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:27:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 6377 transitions. [2020-10-12 20:27:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:27:46,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:46,478 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] [2020-10-12 20:27:46,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:27:46,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:46,479 INFO L82 PathProgramCache]: Analyzing trace with hash 63700932, now seen corresponding path program 1 times [2020-10-12 20:27:46,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:46,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079127230] [2020-10-12 20:27:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:51,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:51,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:27:51,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:27:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:27:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:27:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:27:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:27:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:52,164 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:52,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:52,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:27:52,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:27:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:52,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079127230] [2020-10-12 20:27:52,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:52,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:27:52,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54504149] [2020-10-12 20:27:52,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:27:52,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:52,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:27:52,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:27:52,279 INFO L87 Difference]: Start difference. First operand 3819 states and 6377 transitions. Second operand 8 states. [2020-10-12 20:27:52,940 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:27:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:57,199 INFO L93 Difference]: Finished difference Result 31224 states and 52133 transitions. [2020-10-12 20:27:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:27:57,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-12 20:27:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:57,295 INFO L225 Difference]: With dead ends: 31224 [2020-10-12 20:27:57,295 INFO L226 Difference]: Without dead ends: 27849 [2020-10-12 20:27:57,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:27:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27849 states. [2020-10-12 20:27:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27849 to 10680. [2020-10-12 20:27:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10680 states. [2020-10-12 20:27:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 17813 transitions. [2020-10-12 20:27:58,450 INFO L78 Accepts]: Start accepts. Automaton has 10680 states and 17813 transitions. Word has length 125 [2020-10-12 20:27:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:58,450 INFO L479 AbstractCegarLoop]: Abstraction has 10680 states and 17813 transitions. [2020-10-12 20:27:58,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:27:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10680 states and 17813 transitions. [2020-10-12 20:27:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:27:58,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:58,464 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] [2020-10-12 20:27:58,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:27:58,465 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:58,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1922234707, now seen corresponding path program 1 times [2020-10-12 20:27:58,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:58,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60909175] [2020-10-12 20:27:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:03,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:03,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:28:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:28:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:28:03,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:03,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:28:03,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:28:03,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:28:03,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:04,077 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:04,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:04,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:04,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:04,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:28:04,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:04,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60909175] [2020-10-12 20:28:04,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:04,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:28:04,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281723251] [2020-10-12 20:28:04,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:28:04,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:04,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:28:04,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:28:04,143 INFO L87 Difference]: Start difference. First operand 10680 states and 17813 transitions. Second operand 8 states. [2020-10-12 20:28:04,576 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:28:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:11,365 INFO L93 Difference]: Finished difference Result 90575 states and 150939 transitions. [2020-10-12 20:28:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:28:11,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-12 20:28:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:11,612 INFO L225 Difference]: With dead ends: 90575 [2020-10-12 20:28:11,612 INFO L226 Difference]: Without dead ends: 80433 [2020-10-12 20:28:11,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:28:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80433 states. [2020-10-12 20:28:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80433 to 29802. [2020-10-12 20:28:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-12 20:28:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 49621 transitions. [2020-10-12 20:28:15,982 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 49621 transitions. Word has length 126 [2020-10-12 20:28:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:15,982 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 49621 transitions. [2020-10-12 20:28:15,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:28:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 49621 transitions. [2020-10-12 20:28:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:28:15,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:15,985 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] [2020-10-12 20:28:15,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:28:15,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:15,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1058012029, now seen corresponding path program 1 times [2020-10-12 20:28:15,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:15,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127741153] [2020-10-12 20:28:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:28:19,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:28:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3619 [2020-10-12 20:28:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:28:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:28:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:28:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:28:20,095 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:20,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:20,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:28:20,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:28:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:20,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127741153] [2020-10-12 20:28:20,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:20,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:28:20,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645906080] [2020-10-12 20:28:20,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:28:20,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:20,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:28:20,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:28:20,184 INFO L87 Difference]: Start difference. First operand 29802 states and 49621 transitions. Second operand 7 states. [2020-10-12 20:28:20,778 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:28:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:28,946 INFO L93 Difference]: Finished difference Result 136698 states and 227563 transitions. [2020-10-12 20:28:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:28:28,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-12 20:28:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:29,222 INFO L225 Difference]: With dead ends: 136698 [2020-10-12 20:28:29,222 INFO L226 Difference]: Without dead ends: 107435 [2020-10-12 20:28:29,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:28:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107435 states. [2020-10-12 20:28:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107435 to 29802. [2020-10-12 20:28:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-12 20:28:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 49605 transitions. [2020-10-12 20:28:31,922 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 49605 transitions. Word has length 128 [2020-10-12 20:28:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:31,923 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 49605 transitions. [2020-10-12 20:28:31,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:28:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 49605 transitions. [2020-10-12 20:28:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:28:31,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:31,927 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] [2020-10-12 20:28:31,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:28:31,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:31,927 INFO L82 PathProgramCache]: Analyzing trace with hash -146117589, now seen corresponding path program 1 times [2020-10-12 20:28:31,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:31,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099307701] [2020-10-12 20:28:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:37,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5731 [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 20:28:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:38,193 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:38,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:28:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:38,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099307701] [2020-10-12 20:28:38,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:38,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:38,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858191808] [2020-10-12 20:28:38,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:38,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:38,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:38,279 INFO L87 Difference]: Start difference. First operand 29802 states and 49605 transitions. Second operand 5 states. [2020-10-12 20:28:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:44,754 INFO L93 Difference]: Finished difference Result 88058 states and 146570 transitions. [2020-10-12 20:28:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:44,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:28:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:44,877 INFO L225 Difference]: With dead ends: 88058 [2020-10-12 20:28:44,877 INFO L226 Difference]: Without dead ends: 58303 [2020-10-12 20:28:44,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:28:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58303 states. [2020-10-12 20:28:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58303 to 58301. [2020-10-12 20:28:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58301 states. [2020-10-12 20:28:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58301 states to 58301 states and 96633 transitions. [2020-10-12 20:28:49,533 INFO L78 Accepts]: Start accepts. Automaton has 58301 states and 96633 transitions. Word has length 129 [2020-10-12 20:28:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:49,533 INFO L479 AbstractCegarLoop]: Abstraction has 58301 states and 96633 transitions. [2020-10-12 20:28:49,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 58301 states and 96633 transitions. [2020-10-12 20:28:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:28:49,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:49,539 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] [2020-10-12 20:28:49,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:28:49,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash 501228186, now seen corresponding path program 1 times [2020-10-12 20:28:49,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:49,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048176754] [2020-10-12 20:28:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:54,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:54,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:28:54,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:28:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:28:54,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:28:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:55,026 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:55,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:55,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:55,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:55,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048176754] [2020-10-12 20:28:55,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:55,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:55,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327134882] [2020-10-12 20:28:55,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:55,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:55,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:55,080 INFO L87 Difference]: Start difference. First operand 58301 states and 96633 transitions. Second operand 5 states. [2020-10-12 20:29:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:05,711 INFO L93 Difference]: Finished difference Result 172248 states and 285473 transitions. [2020-10-12 20:29:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:05,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:29:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:05,909 INFO L225 Difference]: With dead ends: 172248 [2020-10-12 20:29:05,909 INFO L226 Difference]: Without dead ends: 114024 [2020-10-12 20:29:05,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:29:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114024 states. [2020-10-12 20:29:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114024 to 114022. [2020-10-12 20:29:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114022 states. [2020-10-12 20:29:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114022 states to 114022 states and 188127 transitions. [2020-10-12 20:29:16,849 INFO L78 Accepts]: Start accepts. Automaton has 114022 states and 188127 transitions. Word has length 129 [2020-10-12 20:29:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:16,850 INFO L479 AbstractCegarLoop]: Abstraction has 114022 states and 188127 transitions. [2020-10-12 20:29:16,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 114022 states and 188127 transitions. [2020-10-12 20:29:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:29:16,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:16,863 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] [2020-10-12 20:29:16,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:29:16,863 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1257541698, now seen corresponding path program 1 times [2020-10-12 20:29:16,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:16,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378575927] [2020-10-12 20:29:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:17,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:29:21,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:29:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:29:21,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:29:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:29:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:29:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:22,343 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:29:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:22,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:22,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378575927] [2020-10-12 20:29:22,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:22,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:29:22,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904895716] [2020-10-12 20:29:22,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:29:22,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:22,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:29:22,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:29:22,393 INFO L87 Difference]: Start difference. First operand 114022 states and 188127 transitions. Second operand 5 states. [2020-10-12 20:29:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:43,613 INFO L93 Difference]: Finished difference Result 337284 states and 556391 transitions. [2020-10-12 20:29:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:43,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:29:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:44,018 INFO L225 Difference]: With dead ends: 337284 [2020-10-12 20:29:44,019 INFO L226 Difference]: Without dead ends: 223277 [2020-10-12 20:29:44,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:29:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223277 states. [2020-10-12 20:30:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223277 to 223275. [2020-10-12 20:30:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223275 states. [2020-10-12 20:30:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223275 states to 223275 states and 366639 transitions. [2020-10-12 20:30:08,010 INFO L78 Accepts]: Start accepts. Automaton has 223275 states and 366639 transitions. Word has length 129 [2020-10-12 20:30:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:08,010 INFO L479 AbstractCegarLoop]: Abstraction has 223275 states and 366639 transitions. [2020-10-12 20:30:08,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:30:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 223275 states and 366639 transitions. [2020-10-12 20:30:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:30:08,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:08,022 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] [2020-10-12 20:30:08,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:30:08,022 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:08,023 INFO L82 PathProgramCache]: Analyzing trace with hash 320031638, now seen corresponding path program 1 times [2020-10-12 20:30:08,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:08,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35910600] [2020-10-12 20:30:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:09,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:09,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:30:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:30:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-12 20:30:09,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:30:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:30:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:30:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:10,086 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:30:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:10,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35910600] [2020-10-12 20:30:10,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:10,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:30:10,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124278963] [2020-10-12 20:30:10,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:30:10,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:30:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:30:10,129 INFO L87 Difference]: Start difference. First operand 223275 states and 366639 transitions. Second operand 4 states. [2020-10-12 20:30:10,542 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-12 20:30:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:45,034 INFO L93 Difference]: Finished difference Result 565347 states and 927373 transitions. [2020-10-12 20:30:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:30:45,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-12 20:30:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:45,639 INFO L225 Difference]: With dead ends: 565347 [2020-10-12 20:30:45,640 INFO L226 Difference]: Without dead ends: 343617 [2020-10-12 20:30:45,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:30:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343617 states.