/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:55:22,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:55:22,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:55:22,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:55:22,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:55:22,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:55:22,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:55:22,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:55:22,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:55:22,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:55:22,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:55:22,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:55:22,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:55:22,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:55:22,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:55:22,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:55:22,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:55:22,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:55:22,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:55:22,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:55:22,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:55:22,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:55:22,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:55:22,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:55:22,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:55:22,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:55:22,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:55:22,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:55:22,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:55:22,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:55:22,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:55:22,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:55:22,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:55:22,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:55:22,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:55:22,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:55:22,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:55:22,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:55:22,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:55:22,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:55:22,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:55:22,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:55:22,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:55:22,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:55:22,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:55:22,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:55:22,888 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:55:22,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:55:22,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:55:22,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:55:22,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:55:22,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:55:22,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:55:22,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:55:22,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:55:22,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:55:22,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:55:22,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:55:22,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:55:22,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:55:22,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:55:22,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:55:22,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:55:22,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:55:22,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:55:22,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:55:22,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:55:22,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:55:22,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:55:22,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:55:22,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:55:22,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:55:23,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:55:23,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:55:23,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:55:23,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:55:23,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:55:23,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:55:23,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cabdae699/338fa0a4caae4e2fbae38a73a3f6ec7a/FLAGe4ad49480 [2020-10-12 19:55:23,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:55:23,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:55:23,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cabdae699/338fa0a4caae4e2fbae38a73a3f6ec7a/FLAGe4ad49480 [2020-10-12 19:55:24,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cabdae699/338fa0a4caae4e2fbae38a73a3f6ec7a [2020-10-12 19:55:24,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:55:24,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:55:24,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:55:24,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:55:24,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:55:24,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:55:24" (1/1) ... [2020-10-12 19:55:24,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8484e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:24, skipping insertion in model container [2020-10-12 19:55:24,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:55:24" (1/1) ... [2020-10-12 19:55:24,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:55:24,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:55:25,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:55:25,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:55:25,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:55:25,768 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:55:25,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25 WrapperNode [2020-10-12 19:55:25,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:55:25,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:55:25,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:55:25,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:55:25,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... [2020-10-12 19:55:25,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:55:25,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:55:25,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:55:25,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:55:25,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:55:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:55:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:55:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:55:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:55:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:55:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:55:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:55:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:55:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:55:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:55:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:55:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:55:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:55:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:55:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:55:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:55:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:55:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:55:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:55:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:55:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:55:29,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:55:29,267 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:55:29,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:55:29 BoogieIcfgContainer [2020-10-12 19:55:29,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:55:29,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:55:29,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:55:29,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:55:29,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:55:24" (1/3) ... [2020-10-12 19:55:29,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ac59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:55:29, skipping insertion in model container [2020-10-12 19:55:29,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:55:25" (2/3) ... [2020-10-12 19:55:29,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ac59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:55:29, skipping insertion in model container [2020-10-12 19:55:29,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:55:29" (3/3) ... [2020-10-12 19:55:29,292 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:55:29,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:55:29,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 19:55:29,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 19:55:29,372 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:55:29,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:55:29,373 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:55:29,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:55:29,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:55:29,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:55:29,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:55:29,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:55:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states. [2020-10-12 19:55:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:55:29,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:29,444 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] [2020-10-12 19:55:29,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:29,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1062072512, now seen corresponding path program 1 times [2020-10-12 19:55:29,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:29,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020911711] [2020-10-12 19:55:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:32,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:34,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:34,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:55:34,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:55:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 19:55:34,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:55:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:55:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:55:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:55:36,109 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:55:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:36,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:36,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:36,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 19:55:36,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:55:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:55:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:55:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:36,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020911711] [2020-10-12 19:55:36,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:36,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:55:36,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002054963] [2020-10-12 19:55:36,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:55:36,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:36,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:55:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:55:36,253 INFO L87 Difference]: Start difference. First operand 1126 states. Second operand 13 states. [2020-10-12 19:55:37,900 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 328 DAG size of output: 326 [2020-10-12 19:55:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:50,875 INFO L93 Difference]: Finished difference Result 2632 states and 4486 transitions. [2020-10-12 19:55:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:55:50,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-12 19:55:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:50,916 INFO L225 Difference]: With dead ends: 2632 [2020-10-12 19:55:50,916 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 19:55:50,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:55:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 19:55:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1314. [2020-10-12 19:55:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-12 19:55:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1739 transitions. [2020-10-12 19:55:51,074 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1739 transitions. Word has length 55 [2020-10-12 19:55:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:51,075 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 1739 transitions. [2020-10-12 19:55:51,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:55:51,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1739 transitions. [2020-10-12 19:55:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:55:51,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:51,080 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] [2020-10-12 19:55:51,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:55:51,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:51,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2145753423, now seen corresponding path program 1 times [2020-10-12 19:55:51,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:51,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579382175] [2020-10-12 19:55:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:56,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:56,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:55:56,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:55:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:55:56,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:55:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:55:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:55:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:55:57,198 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:55:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 19:55:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:55:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:55:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:55:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:57,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579382175] [2020-10-12 19:55:57,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:57,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:55:57,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231705546] [2020-10-12 19:55:57,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:55:57,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:55:57,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:55:57,303 INFO L87 Difference]: Start difference. First operand 1314 states and 1739 transitions. Second operand 15 states. [2020-10-12 19:55:58,913 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 335 DAG size of output: 331 [2020-10-12 19:56:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:56:11,730 INFO L93 Difference]: Finished difference Result 2446 states and 3328 transitions. [2020-10-12 19:56:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:56:11,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-12 19:56:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:56:11,750 INFO L225 Difference]: With dead ends: 2446 [2020-10-12 19:56:11,750 INFO L226 Difference]: Without dead ends: 2305 [2020-10-12 19:56:11,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=316, Invalid=1090, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:56:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-10-12 19:56:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1324. [2020-10-12 19:56:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-12 19:56:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1755 transitions. [2020-10-12 19:56:11,873 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1755 transitions. Word has length 55 [2020-10-12 19:56:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:56:11,874 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 1755 transitions. [2020-10-12 19:56:11,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:56:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1755 transitions. [2020-10-12 19:56:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:56:11,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:56:11,883 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] [2020-10-12 19:56:11,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:56:11,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:56:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:56:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash 944994914, now seen corresponding path program 1 times [2020-10-12 19:56:11,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:56:11,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296242248] [2020-10-12 19:56:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:56:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:16,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:56:16,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:56:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:56:16,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:56:17,808 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:56:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:56:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:56:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:56:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:56:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:56:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:56:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:56:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:56:17,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296242248] [2020-10-12 19:56:17,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:56:17,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:56:17,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972888423] [2020-10-12 19:56:17,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:56:17,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:56:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:56:17,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:56:17,869 INFO L87 Difference]: Start difference. First operand 1324 states and 1755 transitions. Second operand 11 states. [2020-10-12 19:56:19,384 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 336 DAG size of output: 333 [2020-10-12 19:56:20,488 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-12 19:56:27,466 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 19:56:30,181 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 19:56:30,350 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 19:56:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:56:33,190 INFO L93 Difference]: Finished difference Result 5442 states and 7796 transitions. [2020-10-12 19:56:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-12 19:56:33,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-12 19:56:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:56:33,216 INFO L225 Difference]: With dead ends: 5442 [2020-10-12 19:56:33,216 INFO L226 Difference]: Without dead ends: 4877 [2020-10-12 19:56:33,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 19:56:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2020-10-12 19:56:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 1866. [2020-10-12 19:56:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2020-10-12 19:56:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2523 transitions. [2020-10-12 19:56:33,394 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2523 transitions. Word has length 56 [2020-10-12 19:56:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:56:33,395 INFO L479 AbstractCegarLoop]: Abstraction has 1866 states and 2523 transitions. [2020-10-12 19:56:33,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:56:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2523 transitions. [2020-10-12 19:56:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:56:33,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:56:33,398 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] [2020-10-12 19:56:33,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:56:33,399 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:56:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:56:33,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1848395569, now seen corresponding path program 1 times [2020-10-12 19:56:33,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:56:33,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159285739] [2020-10-12 19:56:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:56:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:56:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:56:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:56:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:56:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:56:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:56:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:39,357 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:56:39,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:56:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:56:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:56:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:56:39,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:56:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:56:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:56:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:56:39,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159285739] [2020-10-12 19:56:39,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:56:39,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:56:39,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821847448] [2020-10-12 19:56:39,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:56:39,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:56:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:56:39,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:56:39,416 INFO L87 Difference]: Start difference. First operand 1866 states and 2523 transitions. Second operand 13 states. [2020-10-12 19:56:40,131 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2020-10-12 19:56:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:56:47,621 INFO L93 Difference]: Finished difference Result 3066 states and 4393 transitions. [2020-10-12 19:56:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:56:47,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-12 19:56:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:56:47,635 INFO L225 Difference]: With dead ends: 3066 [2020-10-12 19:56:47,636 INFO L226 Difference]: Without dead ends: 2725 [2020-10-12 19:56:47,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:56:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2020-10-12 19:56:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1987. [2020-10-12 19:56:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-12 19:56:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2696 transitions. [2020-10-12 19:56:47,806 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2696 transitions. Word has length 56 [2020-10-12 19:56:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:56:47,806 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2696 transitions. [2020-10-12 19:56:47,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:56:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2696 transitions. [2020-10-12 19:56:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:56:47,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:56:47,812 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] [2020-10-12 19:56:47,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:56:47,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:56:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:56:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1417414329, now seen corresponding path program 1 times [2020-10-12 19:56:47,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:56:47,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157374215] [2020-10-12 19:56:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:56:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:56:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:56:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:56:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:56:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:56:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:56:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:53,755 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:56:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:56:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:56:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:56:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:56:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:56:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:56:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:56:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:56:53,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157374215] [2020-10-12 19:56:53,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:56:53,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:56:53,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419951662] [2020-10-12 19:56:53,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:56:53,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:56:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:56:53,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:56:53,842 INFO L87 Difference]: Start difference. First operand 1987 states and 2696 transitions. Second operand 15 states. [2020-10-12 19:56:55,372 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 334 DAG size of output: 332 [2020-10-12 19:57:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:06,491 INFO L93 Difference]: Finished difference Result 2885 states and 4023 transitions. [2020-10-12 19:57:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 19:57:06,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:57:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:06,508 INFO L225 Difference]: With dead ends: 2885 [2020-10-12 19:57:06,508 INFO L226 Difference]: Without dead ends: 2880 [2020-10-12 19:57:06,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:57:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-10-12 19:57:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1987. [2020-10-12 19:57:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-12 19:57:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2695 transitions. [2020-10-12 19:57:06,675 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2695 transitions. Word has length 56 [2020-10-12 19:57:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:06,675 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2695 transitions. [2020-10-12 19:57:06,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:57:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2695 transitions. [2020-10-12 19:57:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:57:06,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:06,679 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] [2020-10-12 19:57:06,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:57:06,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash -389119888, now seen corresponding path program 1 times [2020-10-12 19:57:06,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:06,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311048710] [2020-10-12 19:57:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:11,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:11,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:57:11,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:57:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:12,124 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-10-12 19:57:12,251 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-10-12 19:57:12,420 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-12 19:57:12,592 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-12 19:57:13,441 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:57:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:13,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:57:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:13,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311048710] [2020-10-12 19:57:13,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:13,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:57:13,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435266264] [2020-10-12 19:57:13,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:57:13,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:13,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:57:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:57:13,491 INFO L87 Difference]: Start difference. First operand 1987 states and 2695 transitions. Second operand 15 states. [2020-10-12 19:57:13,831 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 19:57:15,605 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 383 DAG size of output: 370 [2020-10-12 19:57:16,152 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-12 19:57:16,560 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-12 19:57:16,940 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-12 19:57:17,853 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 19:57:18,945 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 19:57:20,251 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-12 19:57:20,641 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-12 19:57:21,056 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-12 19:57:21,677 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-12 19:57:23,746 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-12 19:57:25,032 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 19:57:25,496 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-12 19:57:25,829 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-12 19:57:26,759 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-12 19:57:27,508 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 19:57:28,766 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-12 19:57:30,839 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-12 19:57:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:30,876 INFO L93 Difference]: Finished difference Result 3598 states and 5100 transitions. [2020-10-12 19:57:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:57:30,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:57:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:30,889 INFO L225 Difference]: With dead ends: 3598 [2020-10-12 19:57:30,889 INFO L226 Difference]: Without dead ends: 3594 [2020-10-12 19:57:30,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:57:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-10-12 19:57:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 1993. [2020-10-12 19:57:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1993 states. [2020-10-12 19:57:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2704 transitions. [2020-10-12 19:57:31,121 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2704 transitions. Word has length 56 [2020-10-12 19:57:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:31,122 INFO L479 AbstractCegarLoop]: Abstraction has 1993 states and 2704 transitions. [2020-10-12 19:57:31,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:57:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2704 transitions. [2020-10-12 19:57:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:57:31,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:31,126 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] [2020-10-12 19:57:31,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:57:31,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1950057997, now seen corresponding path program 1 times [2020-10-12 19:57:31,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:31,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142462867] [2020-10-12 19:57:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:36,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:57:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:57:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:57:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:37,361 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:57:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:37,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:37,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:57:37,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:57:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:57:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:37,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142462867] [2020-10-12 19:57:37,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:37,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:57:37,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038307004] [2020-10-12 19:57:37,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:57:37,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:37,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:57:37,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:57:37,419 INFO L87 Difference]: Start difference. First operand 1993 states and 2704 transitions. Second operand 16 states. [2020-10-12 19:57:39,057 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 341 DAG size of output: 335 [2020-10-12 19:57:39,716 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-12 19:57:40,213 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-12 19:57:40,575 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-12 19:57:51,413 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-12 19:57:52,506 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-12 19:57:54,661 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-12 19:57:55,273 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-12 19:57:55,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:55,747 INFO L93 Difference]: Finished difference Result 6112 states and 9069 transitions. [2020-10-12 19:57:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:57:55,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-12 19:57:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:55,767 INFO L225 Difference]: With dead ends: 6112 [2020-10-12 19:57:55,768 INFO L226 Difference]: Without dead ends: 5700 [2020-10-12 19:57:55,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=468, Invalid=1694, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 19:57:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-12 19:57:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 1989. [2020-10-12 19:57:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2020-10-12 19:57:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2698 transitions. [2020-10-12 19:57:55,970 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2698 transitions. Word has length 57 [2020-10-12 19:57:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:55,970 INFO L479 AbstractCegarLoop]: Abstraction has 1989 states and 2698 transitions. [2020-10-12 19:57:55,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:57:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2698 transitions. [2020-10-12 19:57:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:57:55,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:55,972 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] [2020-10-12 19:57:55,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:57:55,973 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:55,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1028474934, now seen corresponding path program 1 times [2020-10-12 19:57:55,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:55,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759794036] [2020-10-12 19:57:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:01,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:01,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:58:01,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:58:01,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:58:01,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:58:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:58:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:01,982 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:58:02,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:02,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759794036] [2020-10-12 19:58:02,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:02,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:58:02,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400735753] [2020-10-12 19:58:02,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:58:02,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:02,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:58:02,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:58:02,036 INFO L87 Difference]: Start difference. First operand 1989 states and 2698 transitions. Second operand 14 states. [2020-10-12 19:58:02,780 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-12 19:58:05,358 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 19:58:08,859 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 19:58:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:18,017 INFO L93 Difference]: Finished difference Result 6516 states and 9680 transitions. [2020-10-12 19:58:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-12 19:58:18,018 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-12 19:58:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:18,042 INFO L225 Difference]: With dead ends: 6516 [2020-10-12 19:58:18,042 INFO L226 Difference]: Without dead ends: 6117 [2020-10-12 19:58:18,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=693, Invalid=2967, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 19:58:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2020-10-12 19:58:18,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 2669. [2020-10-12 19:58:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-10-12 19:58:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3775 transitions. [2020-10-12 19:58:18,364 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3775 transitions. Word has length 57 [2020-10-12 19:58:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:18,365 INFO L479 AbstractCegarLoop]: Abstraction has 2669 states and 3775 transitions. [2020-10-12 19:58:18,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:58:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3775 transitions. [2020-10-12 19:58:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:58:18,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:18,369 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] [2020-10-12 19:58:18,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:58:18,369 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1623459914, now seen corresponding path program 1 times [2020-10-12 19:58:18,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:18,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625304446] [2020-10-12 19:58:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:58:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:58:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:21,317 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:21,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:21,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:21,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:58:21,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:21,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625304446] [2020-10-12 19:58:21,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:58:21,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671106980] [2020-10-12 19:58:21,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:58:21,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:21,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:58:21,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:58:21,366 INFO L87 Difference]: Start difference. First operand 2669 states and 3775 transitions. Second operand 12 states. [2020-10-12 19:58:22,097 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2020-10-12 19:58:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:29,318 INFO L93 Difference]: Finished difference Result 7259 states and 11028 transitions. [2020-10-12 19:58:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:58:29,319 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-12 19:58:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:29,331 INFO L225 Difference]: With dead ends: 7259 [2020-10-12 19:58:29,331 INFO L226 Difference]: Without dead ends: 5480 [2020-10-12 19:58:29,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:58:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2020-10-12 19:58:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 2389. [2020-10-12 19:58:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2020-10-12 19:58:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3448 transitions. [2020-10-12 19:58:29,706 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3448 transitions. Word has length 57 [2020-10-12 19:58:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:29,707 INFO L479 AbstractCegarLoop]: Abstraction has 2389 states and 3448 transitions. [2020-10-12 19:58:29,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:58:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3448 transitions. [2020-10-12 19:58:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:58:29,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:29,709 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] [2020-10-12 19:58:29,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:58:29,710 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1861783078, now seen corresponding path program 1 times [2020-10-12 19:58:29,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:29,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957292907] [2020-10-12 19:58:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:32,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2813 [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:58:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:33,797 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:33,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:33,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:33,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:33,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:58:33,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:33,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:33,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957292907] [2020-10-12 19:58:33,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:33,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:58:33,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575118631] [2020-10-12 19:58:33,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:58:33,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:33,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:58:33,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:58:33,847 INFO L87 Difference]: Start difference. First operand 2389 states and 3448 transitions. Second operand 12 states. [2020-10-12 19:58:34,574 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-12 19:58:34,933 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 19:58:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:43,157 INFO L93 Difference]: Finished difference Result 8700 states and 13424 transitions. [2020-10-12 19:58:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:58:43,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-12 19:58:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:43,175 INFO L225 Difference]: With dead ends: 8700 [2020-10-12 19:58:43,175 INFO L226 Difference]: Without dead ends: 7463 [2020-10-12 19:58:43,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:58:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2020-10-12 19:58:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 2377. [2020-10-12 19:58:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2377 states. [2020-10-12 19:58:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3433 transitions. [2020-10-12 19:58:43,726 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3433 transitions. Word has length 57 [2020-10-12 19:58:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:43,726 INFO L479 AbstractCegarLoop]: Abstraction has 2377 states and 3433 transitions. [2020-10-12 19:58:43,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:58:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3433 transitions. [2020-10-12 19:58:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:58:43,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:43,730 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] [2020-10-12 19:58:43,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:58:43,731 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:43,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1619555404, now seen corresponding path program 1 times [2020-10-12 19:58:43,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:43,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53591814] [2020-10-12 19:58:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:58:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:58:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:45,288 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:45,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:45,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:58:45,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:45,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53591814] [2020-10-12 19:58:45,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:45,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:58:45,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158481270] [2020-10-12 19:58:45,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:58:45,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:45,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:58:45,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:58:45,338 INFO L87 Difference]: Start difference. First operand 2377 states and 3433 transitions. Second operand 6 states. [2020-10-12 19:58:46,014 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-12 19:58:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:49,989 INFO L93 Difference]: Finished difference Result 4673 states and 7014 transitions. [2020-10-12 19:58:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:58:49,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-12 19:58:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:49,997 INFO L225 Difference]: With dead ends: 4673 [2020-10-12 19:58:49,997 INFO L226 Difference]: Without dead ends: 3128 [2020-10-12 19:58:50,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:58:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-12 19:58:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3126. [2020-10-12 19:58:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-12 19:58:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4600 transitions. [2020-10-12 19:58:50,672 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4600 transitions. Word has length 63 [2020-10-12 19:58:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:50,672 INFO L479 AbstractCegarLoop]: Abstraction has 3126 states and 4600 transitions. [2020-10-12 19:58:50,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:58:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4600 transitions. [2020-10-12 19:58:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:58:50,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:50,676 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] [2020-10-12 19:58:50,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:58:50,676 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash -457052867, now seen corresponding path program 1 times [2020-10-12 19:58:50,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:50,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228382570] [2020-10-12 19:58:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:58:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:58:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:52,475 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:52,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:52,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:52,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:58:52,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:52,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228382570] [2020-10-12 19:58:52,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:52,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:58:52,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556983286] [2020-10-12 19:58:52,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:58:52,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:52,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:58:52,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:58:52,525 INFO L87 Difference]: Start difference. First operand 3126 states and 4600 transitions. Second operand 6 states. [2020-10-12 19:58:53,202 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-12 19:58:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:57,025 INFO L93 Difference]: Finished difference Result 6380 states and 9654 transitions. [2020-10-12 19:58:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:58:57,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-12 19:58:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:57,034 INFO L225 Difference]: With dead ends: 6380 [2020-10-12 19:58:57,035 INFO L226 Difference]: Without dead ends: 4032 [2020-10-12 19:58:57,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:58:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2020-10-12 19:58:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 4030. [2020-10-12 19:58:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4030 states. [2020-10-12 19:58:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5992 transitions. [2020-10-12 19:58:57,980 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5992 transitions. Word has length 63 [2020-10-12 19:58:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:57,980 INFO L479 AbstractCegarLoop]: Abstraction has 4030 states and 5992 transitions. [2020-10-12 19:58:57,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:58:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5992 transitions. [2020-10-12 19:58:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:58:57,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:57,984 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] [2020-10-12 19:58:57,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:58:57,984 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -594357930, now seen corresponding path program 1 times [2020-10-12 19:58:57,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:57,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858184814] [2020-10-12 19:58:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:59,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:59,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:58:59,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:58:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-12 19:58:59,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:58:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:58:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 19:58:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:59,907 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:59,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858184814] [2020-10-12 19:58:59,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:59,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:58:59,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130090878] [2020-10-12 19:58:59,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:58:59,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:58:59,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:58:59,980 INFO L87 Difference]: Start difference. First operand 4030 states and 5992 transitions. Second operand 6 states. [2020-10-12 19:59:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:04,684 INFO L93 Difference]: Finished difference Result 11668 states and 17927 transitions. [2020-10-12 19:59:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:59:04,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-12 19:59:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:04,692 INFO L225 Difference]: With dead ends: 11668 [2020-10-12 19:59:04,693 INFO L226 Difference]: Without dead ends: 8417 [2020-10-12 19:59:04,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:59:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2020-10-12 19:59:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 7913. [2020-10-12 19:59:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7913 states. [2020-10-12 19:59:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 12021 transitions. [2020-10-12 19:59:06,544 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 12021 transitions. Word has length 64 [2020-10-12 19:59:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:06,544 INFO L479 AbstractCegarLoop]: Abstraction has 7913 states and 12021 transitions. [2020-10-12 19:59:06,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:59:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 12021 transitions. [2020-10-12 19:59:06,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:59:06,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:06,547 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] [2020-10-12 19:59:06,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:59:06,547 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:06,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:06,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1041888464, now seen corresponding path program 1 times [2020-10-12 19:59:06,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:06,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043423672] [2020-10-12 19:59:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:59:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:08,996 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:59:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:09,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043423672] [2020-10-12 19:59:09,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:09,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:59:09,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612931612] [2020-10-12 19:59:09,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:59:09,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:59:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:59:09,054 INFO L87 Difference]: Start difference. First operand 7913 states and 12021 transitions. Second operand 9 states. [2020-10-12 19:59:09,857 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 320