/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:16:54,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:16:54,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:16:54,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:16:54,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:16:54,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:16:54,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:16:54,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:16:54,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:16:54,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:16:54,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:16:54,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:16:54,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:16:54,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:16:54,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:16:54,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:16:54,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:16:54,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:16:54,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:16:54,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:16:54,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:16:55,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:16:55,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:16:55,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:16:55,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:16:55,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:16:55,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:16:55,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:16:55,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:16:55,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:16:55,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:16:55,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:16:55,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:16:55,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:16:55,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:16:55,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:16:55,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:16:55,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:16:55,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:16:55,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:16:55,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:16:55,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:16:55,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:16:55,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:16:55,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:16:55,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:16:55,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:16:55,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:16:55,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:16:55,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:16:55,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:16:55,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:16:55,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:16:55,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:16:55,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:16:55,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:16:55,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:16:55,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:16:55,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:16:55,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:16:55,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:16:55,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:16:55,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:16:55,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:16:55,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:16:55,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:16:55,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:16:55,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:16:55,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:16:55,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:16:55,376 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:16:55,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:16:55,377 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:16:55,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89d0112b5/62c55660415142acb9477eed9b445ff4/FLAG97282c37b [2020-10-14 09:16:55,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:16:55,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:16:55,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89d0112b5/62c55660415142acb9477eed9b445ff4/FLAG97282c37b [2020-10-14 09:16:56,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89d0112b5/62c55660415142acb9477eed9b445ff4 [2020-10-14 09:16:56,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:16:56,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:16:56,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:16:56,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:16:56,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:16:56,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:56,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ace65ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56, skipping insertion in model container [2020-10-14 09:16:56,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:56,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:16:56,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:16:56,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:16:56,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:16:56,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:16:56,978 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:16:56,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56 WrapperNode [2020-10-14 09:16:56,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:16:56,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:16:56,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:16:56,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:16:56,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:56,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... [2020-10-14 09:16:57,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:16:57,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:16:57,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:16:57,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:16:57,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:16:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:16:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:16:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:16:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:16:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:16:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:16:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:16:57,124 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:16:57,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:16:57,124 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:16:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:16:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:16:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:16:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:16:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:16:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:16:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:16:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:16:57,127 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:16:57,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:16:57,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:16:57,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:16:58,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:16:58,250 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:16:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:58 BoogieIcfgContainer [2020-10-14 09:16:58,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:16:58,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:16:58,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:16:58,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:16:58,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:16:56" (1/3) ... [2020-10-14 09:16:58,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75ad98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:58, skipping insertion in model container [2020-10-14 09:16:58,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:56" (2/3) ... [2020-10-14 09:16:58,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75ad98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:58, skipping insertion in model container [2020-10-14 09:16:58,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:58" (3/3) ... [2020-10-14 09:16:58,264 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:16:58,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:16:58,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:16:58,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:16:58,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:16:58,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:16:58,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:16:58,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:16:58,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:16:58,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:16:58,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:16:58,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:16:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-14 09:16:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 09:16:58,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:58,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:58,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 455647170, now seen corresponding path program 1 times [2020-10-14 09:16:58,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:58,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044804614] [2020-10-14 09:16:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:01,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:01,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 09:17:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:17:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3102 [2020-10-14 09:17:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:01,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 09:17:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:17:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:17:02,031 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:02,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:02,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:02,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:17:02,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:02,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:02,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044804614] [2020-10-14 09:17:02,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:02,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:02,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105831446] [2020-10-14 09:17:02,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:02,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:02,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:02,110 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 4 states. [2020-10-14 09:17:02,369 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 09:17:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:03,282 INFO L93 Difference]: Finished difference Result 425 states and 696 transitions. [2020-10-14 09:17:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:03,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-14 09:17:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:03,301 INFO L225 Difference]: With dead ends: 425 [2020-10-14 09:17:03,301 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 09:17:03,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 09:17:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2020-10-14 09:17:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-14 09:17:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 471 transitions. [2020-10-14 09:17:03,382 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 471 transitions. Word has length 84 [2020-10-14 09:17:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:03,383 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 471 transitions. [2020-10-14 09:17:03,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 471 transitions. [2020-10-14 09:17:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 09:17:03,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:03,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:03,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:17:03,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:03,389 INFO L82 PathProgramCache]: Analyzing trace with hash 980588779, now seen corresponding path program 1 times [2020-10-14 09:17:03,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:03,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442011202] [2020-10-14 09:17:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 09:17:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:17:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-14 09:17:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:17:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 09:17:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:17:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:04,933 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:04,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:04,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:17:04,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:04,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:04,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442011202] [2020-10-14 09:17:04,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:04,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:04,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134587451] [2020-10-14 09:17:04,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:17:04,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:04,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:17:04,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:04,997 INFO L87 Difference]: Start difference. First operand 317 states and 471 transitions. Second operand 5 states. [2020-10-14 09:17:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:05,964 INFO L93 Difference]: Finished difference Result 490 states and 743 transitions. [2020-10-14 09:17:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:17:05,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-14 09:17:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:05,969 INFO L225 Difference]: With dead ends: 490 [2020-10-14 09:17:05,970 INFO L226 Difference]: Without dead ends: 488 [2020-10-14 09:17:05,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-14 09:17:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 319. [2020-10-14 09:17:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 09:17:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 473 transitions. [2020-10-14 09:17:06,003 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 473 transitions. Word has length 85 [2020-10-14 09:17:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:06,004 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 473 transitions. [2020-10-14 09:17:06,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:17:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 473 transitions. [2020-10-14 09:17:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 09:17:06,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:06,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:06,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:17:06,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:06,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:06,013 INFO L82 PathProgramCache]: Analyzing trace with hash 591915382, now seen corresponding path program 1 times [2020-10-14 09:17:06,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:06,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208766320] [2020-10-14 09:17:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:06,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 09:17:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:17:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-14 09:17:06,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:06,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:17:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:17:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 09:17:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:07,273 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:07,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:07,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:07,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:17:07,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:07,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:07,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:07,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:07,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208766320] [2020-10-14 09:17:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:07,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:07,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144571637] [2020-10-14 09:17:07,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:17:07,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:17:07,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:07,334 INFO L87 Difference]: Start difference. First operand 319 states and 473 transitions. Second operand 5 states. [2020-10-14 09:17:07,573 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-14 09:17:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:08,376 INFO L93 Difference]: Finished difference Result 678 states and 1038 transitions. [2020-10-14 09:17:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:17:08,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 09:17:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:08,380 INFO L225 Difference]: With dead ends: 678 [2020-10-14 09:17:08,380 INFO L226 Difference]: Without dead ends: 492 [2020-10-14 09:17:08,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-14 09:17:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2020-10-14 09:17:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-14 09:17:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 742 transitions. [2020-10-14 09:17:08,419 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 742 transitions. Word has length 86 [2020-10-14 09:17:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:08,423 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 742 transitions. [2020-10-14 09:17:08,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:17:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 742 transitions. [2020-10-14 09:17:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:17:08,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:08,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:08,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:17:08,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1465401030, now seen corresponding path program 1 times [2020-10-14 09:17:08,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:08,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571793954] [2020-10-14 09:17:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:08,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:13,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:17:13,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:17:13,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:13,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:17:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:17:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:13,691 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:13,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:13,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:17:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:13,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:13,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571793954] [2020-10-14 09:17:13,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:13,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:13,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398765690] [2020-10-14 09:17:13,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:13,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:13,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:13,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:13,753 INFO L87 Difference]: Start difference. First operand 490 states and 742 transitions. Second operand 4 states. [2020-10-14 09:17:13,935 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:17:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:14,762 INFO L93 Difference]: Finished difference Result 1304 states and 2020 transitions. [2020-10-14 09:17:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:14,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:17:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:14,768 INFO L225 Difference]: With dead ends: 1304 [2020-10-14 09:17:14,768 INFO L226 Difference]: Without dead ends: 907 [2020-10-14 09:17:14,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-10-14 09:17:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 905. [2020-10-14 09:17:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 09:17:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1383 transitions. [2020-10-14 09:17:14,822 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1383 transitions. Word has length 87 [2020-10-14 09:17:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:14,824 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1383 transitions. [2020-10-14 09:17:14,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1383 transitions. [2020-10-14 09:17:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:17:14,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:14,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:14,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:17:14,831 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:14,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1431787708, now seen corresponding path program 1 times [2020-10-14 09:17:14,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:14,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140704947] [2020-10-14 09:17:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:19,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:19,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:17:19,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:17:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:19,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:17:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:17:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:20,083 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:20,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:20,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:20,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:17:20,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:20,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:20,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140704947] [2020-10-14 09:17:20,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:20,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:20,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556129312] [2020-10-14 09:17:20,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:20,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:20,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:20,138 INFO L87 Difference]: Start difference. First operand 905 states and 1383 transitions. Second operand 4 states. [2020-10-14 09:17:20,406 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:17:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:21,470 INFO L93 Difference]: Finished difference Result 2395 states and 3708 transitions. [2020-10-14 09:17:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:21,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:17:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:21,479 INFO L225 Difference]: With dead ends: 2395 [2020-10-14 09:17:21,480 INFO L226 Difference]: Without dead ends: 1645 [2020-10-14 09:17:21,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-14 09:17:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1643. [2020-10-14 09:17:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2020-10-14 09:17:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2505 transitions. [2020-10-14 09:17:21,558 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2505 transitions. Word has length 87 [2020-10-14 09:17:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:21,558 INFO L479 AbstractCegarLoop]: Abstraction has 1643 states and 2505 transitions. [2020-10-14 09:17:21,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2505 transitions. [2020-10-14 09:17:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:17:21,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:21,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:21,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:17:21,561 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:21,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1680355974, now seen corresponding path program 1 times [2020-10-14 09:17:21,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:21,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269042856] [2020-10-14 09:17:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:26,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:17:26,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4455 [2020-10-14 09:17:26,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:26,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 09:17:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:17:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:26,221 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:17:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:26,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269042856] [2020-10-14 09:17:26,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:26,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:26,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987725500] [2020-10-14 09:17:26,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:26,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:26,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:26,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:26,269 INFO L87 Difference]: Start difference. First operand 1643 states and 2505 transitions. Second operand 4 states. [2020-10-14 09:17:26,539 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:17:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:27,381 INFO L93 Difference]: Finished difference Result 4349 states and 6682 transitions. [2020-10-14 09:17:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:27,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:17:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:27,397 INFO L225 Difference]: With dead ends: 4349 [2020-10-14 09:17:27,398 INFO L226 Difference]: Without dead ends: 2985 [2020-10-14 09:17:27,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-10-14 09:17:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2983. [2020-10-14 09:17:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2983 states. [2020-10-14 09:17:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4513 transitions. [2020-10-14 09:17:27,573 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4513 transitions. Word has length 87 [2020-10-14 09:17:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:27,573 INFO L479 AbstractCegarLoop]: Abstraction has 2983 states and 4513 transitions. [2020-10-14 09:17:27,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4513 transitions. [2020-10-14 09:17:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:17:27,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:27,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:27,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:17:27,577 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash 589310852, now seen corresponding path program 1 times [2020-10-14 09:17:27,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:27,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206773458] [2020-10-14 09:17:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:31,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:17:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4036 [2020-10-14 09:17:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:31,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 09:17:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:17:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:31,822 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:31,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:31,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206773458] [2020-10-14 09:17:31,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:31,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:31,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248190681] [2020-10-14 09:17:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:31,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:31,863 INFO L87 Difference]: Start difference. First operand 2983 states and 4513 transitions. Second operand 4 states. [2020-10-14 09:17:32,045 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:17:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:33,097 INFO L93 Difference]: Finished difference Result 7854 states and 11927 transitions. [2020-10-14 09:17:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:33,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:17:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:33,124 INFO L225 Difference]: With dead ends: 7854 [2020-10-14 09:17:33,124 INFO L226 Difference]: Without dead ends: 5398 [2020-10-14 09:17:33,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2020-10-14 09:17:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 5396. [2020-10-14 09:17:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5396 states. [2020-10-14 09:17:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 8066 transitions. [2020-10-14 09:17:33,443 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 8066 transitions. Word has length 87 [2020-10-14 09:17:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:33,443 INFO L479 AbstractCegarLoop]: Abstraction has 5396 states and 8066 transitions. [2020-10-14 09:17:33,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 8066 transitions. [2020-10-14 09:17:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:17:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:33,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:33,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:17:33,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:33,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1870325021, now seen corresponding path program 1 times [2020-10-14 09:17:33,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:33,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403724276] [2020-10-14 09:17:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3976 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 09:17:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:17:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:37,617 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:37,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:37,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:37,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403724276] [2020-10-14 09:17:37,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:37,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:37,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222401993] [2020-10-14 09:17:37,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:37,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:37,645 INFO L87 Difference]: Start difference. First operand 5396 states and 8066 transitions. Second operand 4 states. [2020-10-14 09:17:37,829 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:17:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:38,947 INFO L93 Difference]: Finished difference Result 14209 states and 21282 transitions. [2020-10-14 09:17:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:38,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 09:17:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:38,992 INFO L225 Difference]: With dead ends: 14209 [2020-10-14 09:17:38,992 INFO L226 Difference]: Without dead ends: 9743 [2020-10-14 09:17:39,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9743 states. [2020-10-14 09:17:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9743 to 9741. [2020-10-14 09:17:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9741 states. [2020-10-14 09:17:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 14384 transitions. [2020-10-14 09:17:39,431 INFO L78 Accepts]: Start accepts. Automaton has 9741 states and 14384 transitions. Word has length 87 [2020-10-14 09:17:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:39,432 INFO L479 AbstractCegarLoop]: Abstraction has 9741 states and 14384 transitions. [2020-10-14 09:17:39,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9741 states and 14384 transitions. [2020-10-14 09:17:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:17:39,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:39,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:39,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:17:39,440 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash -190934665, now seen corresponding path program 1 times [2020-10-14 09:17:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:39,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225748808] [2020-10-14 09:17:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:17:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:17:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:17:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:41,615 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:41,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:41,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:17:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:41,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:41,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225748808] [2020-10-14 09:17:41,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:41,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:17:41,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398273326] [2020-10-14 09:17:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:17:41,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:17:41,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:41,650 INFO L87 Difference]: Start difference. First operand 9741 states and 14384 transitions. Second operand 6 states. [2020-10-14 09:17:41,821 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 09:17:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:45,771 INFO L93 Difference]: Finished difference Result 77161 states and 114448 transitions. [2020-10-14 09:17:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:17:45,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:17:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:45,961 INFO L225 Difference]: With dead ends: 77161 [2020-10-14 09:17:45,961 INFO L226 Difference]: Without dead ends: 68161 [2020-10-14 09:17:46,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:17:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68161 states. [2020-10-14 09:17:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68161 to 35231. [2020-10-14 09:17:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35231 states. [2020-10-14 09:17:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35231 states to 35231 states and 52032 transitions. [2020-10-14 09:17:48,691 INFO L78 Accepts]: Start accepts. Automaton has 35231 states and 52032 transitions. Word has length 88 [2020-10-14 09:17:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 35231 states and 52032 transitions. [2020-10-14 09:17:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:17:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35231 states and 52032 transitions. [2020-10-14 09:17:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:17:48,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:48,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:48,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:17:48,707 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash 396921350, now seen corresponding path program 1 times [2020-10-14 09:17:48,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:48,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637879441] [2020-10-14 09:17:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:17:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:17:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:51,256 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:17:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:17:51,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637879441] [2020-10-14 09:17:51,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:51,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:17:51,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523782906] [2020-10-14 09:17:51,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:17:51,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:51,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:17:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:51,280 INFO L87 Difference]: Start difference. First operand 35231 states and 52032 transitions. Second operand 6 states. [2020-10-14 09:17:51,462 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 09:18:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:01,241 INFO L93 Difference]: Finished difference Result 293571 states and 433852 transitions. [2020-10-14 09:18:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:18:01,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:18:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:01,823 INFO L225 Difference]: With dead ends: 293571 [2020-10-14 09:18:01,823 INFO L226 Difference]: Without dead ends: 259917 [2020-10-14 09:18:01,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:18:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259917 states. [2020-10-14 09:18:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259917 to 131703. [2020-10-14 09:18:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131703 states. [2020-10-14 09:18:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131703 states to 131703 states and 193890 transitions. [2020-10-14 09:18:10,397 INFO L78 Accepts]: Start accepts. Automaton has 131703 states and 193890 transitions. Word has length 88 [2020-10-14 09:18:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:10,398 INFO L479 AbstractCegarLoop]: Abstraction has 131703 states and 193890 transitions. [2020-10-14 09:18:10,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:18:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 131703 states and 193890 transitions. [2020-10-14 09:18:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:18:10,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:10,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:18:10,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:18:10,437 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash 321324278, now seen corresponding path program 1 times [2020-10-14 09:18:10,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:10,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895965185] [2020-10-14 09:18:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:12,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:12,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:18:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:18:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-14 09:18:12,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:12,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:18:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:18:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 09:18:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:12,699 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:18:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:12,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:12,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:18:12,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:12,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:18:12,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:18:12,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895965185] [2020-10-14 09:18:12,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:12,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:18:12,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62645415] [2020-10-14 09:18:12,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:18:12,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:12,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:18:12,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:18:12,755 INFO L87 Difference]: Start difference. First operand 131703 states and 193890 transitions. Second operand 6 states. [2020-10-14 09:18:13,501 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 09:18:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:28,290 INFO L93 Difference]: Finished difference Result 387855 states and 570410 transitions. [2020-10-14 09:18:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:18:28,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 09:18:28,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:28,871 INFO L225 Difference]: With dead ends: 387855 [2020-10-14 09:18:28,871 INFO L226 Difference]: Without dead ends: 256633 [2020-10-14 09:18:29,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:18:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256633 states. [2020-10-14 09:18:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256633 to 255607. [2020-10-14 09:18:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255607 states. [2020-10-14 09:18:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255607 states to 255607 states and 374042 transitions. [2020-10-14 09:18:43,752 INFO L78 Accepts]: Start accepts. Automaton has 255607 states and 374042 transitions. Word has length 88 [2020-10-14 09:18:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:43,752 INFO L479 AbstractCegarLoop]: Abstraction has 255607 states and 374042 transitions. [2020-10-14 09:18:43,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:18:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 255607 states and 374042 transitions. [2020-10-14 09:18:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:18:43,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:43,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:18:43,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:18:43,807 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:43,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1185623388, now seen corresponding path program 1 times [2020-10-14 09:18:43,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:43,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128610099] [2020-10-14 09:18:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:18:45,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:18:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-14 09:18:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:18:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:18:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 09:18:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:18:45,948 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:18:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:18:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:18:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:18:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:18:45,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128610099] [2020-10-14 09:18:45,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:45,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:18:45,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919428589] [2020-10-14 09:18:45,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:18:45,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:18:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:18:45,984 INFO L87 Difference]: Start difference. First operand 255607 states and 374042 transitions. Second operand 6 states. [2020-10-14 09:18:46,153 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 152