/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:17:43,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:17:43,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:17:43,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:17:43,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:17:43,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:17:43,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:17:43,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:17:43,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:17:43,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:17:43,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:17:43,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:17:43,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:17:43,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:17:43,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:17:43,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:17:43,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:17:43,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:17:43,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:17:43,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:17:43,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:17:43,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:17:43,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:17:43,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:17:43,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:17:43,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:17:43,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:17:43,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:17:43,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:17:43,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:17:43,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:17:43,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:17:43,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:17:43,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:17:43,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:17:43,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:17:43,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:17:43,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:17:43,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:17:43,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:17:43,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:17:43,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:17:43,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:17:43,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:17:43,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:17:43,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:17:43,934 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:17:43,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:17:43,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:17:43,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:17:43,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:17:43,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:17:43,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:17:43,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:17:43,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:17:43,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:17:43,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:17:43,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:17:43,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:17:43,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:17:43,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:17:43,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:17:43,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:17:43,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:17:43,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:17:43,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:17:43,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:17:43,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:17:43,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:17:43,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:17:43,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:17:43,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:17:44,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:17:44,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:17:44,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:17:44,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:17:44,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:17:44,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:17:44,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086dd01f9/78c797f68a534241967126374f8a2762/FLAGa7683da23 [2020-10-12 20:17:44,987 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:17:44,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:17:45,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086dd01f9/78c797f68a534241967126374f8a2762/FLAGa7683da23 [2020-10-12 20:17:45,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086dd01f9/78c797f68a534241967126374f8a2762 [2020-10-12 20:17:45,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:17:45,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:17:45,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:17:45,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:17:45,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:17:45,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:45" (1/1) ... [2020-10-12 20:17:45,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a91d473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:45, skipping insertion in model container [2020-10-12 20:17:45,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:45" (1/1) ... [2020-10-12 20:17:45,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:17:45,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:17:45,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:17:46,010 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:17:46,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:17:46,567 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:17:46,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46 WrapperNode [2020-10-12 20:17:46,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:17:46,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:17:46,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:17:46,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:17:46,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... [2020-10-12 20:17:46,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:17:46,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:17:46,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:17:46,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:17:46,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:17:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:17:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:17:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:17:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:17:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:17:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:17:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:17:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:17:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:17:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:17:48,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:17:48,179 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:17:48,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:48 BoogieIcfgContainer [2020-10-12 20:17:48,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:17:48,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:17:48,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:17:48,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:17:48,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:17:45" (1/3) ... [2020-10-12 20:17:48,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be396b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:48, skipping insertion in model container [2020-10-12 20:17:48,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:46" (2/3) ... [2020-10-12 20:17:48,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be396b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:48, skipping insertion in model container [2020-10-12 20:17:48,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:48" (3/3) ... [2020-10-12 20:17:48,196 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:17:48,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:17:48,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 20:17:48,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 20:17:48,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:17:48,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:17:48,260 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:17:48,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:17:48,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:17:48,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:17:48,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:17:48,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:17:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states. [2020-10-12 20:17:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:17:48,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:48,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:48,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1613324975, now seen corresponding path program 1 times [2020-10-12 20:17:48,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:48,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418051139] [2020-10-12 20:17:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:17:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:17:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:17:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 20:17:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:17:54,522 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:17:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:17:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:54,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418051139] [2020-10-12 20:17:54,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:54,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:54,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015171573] [2020-10-12 20:17:54,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:54,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:54,675 INFO L87 Difference]: Start difference. First operand 405 states. Second operand 5 states. [2020-10-12 20:17:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:59,040 INFO L93 Difference]: Finished difference Result 1161 states and 2070 transitions. [2020-10-12 20:17:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:17:59,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-12 20:17:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:59,078 INFO L225 Difference]: With dead ends: 1161 [2020-10-12 20:17:59,078 INFO L226 Difference]: Without dead ends: 765 [2020-10-12 20:17:59,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-12 20:17:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 744. [2020-10-12 20:17:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-12 20:17:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1059 transitions. [2020-10-12 20:17:59,187 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1059 transitions. Word has length 149 [2020-10-12 20:17:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:59,188 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1059 transitions. [2020-10-12 20:17:59,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1059 transitions. [2020-10-12 20:17:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 20:17:59,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:59,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:59,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:17:59,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1732603430, now seen corresponding path program 1 times [2020-10-12 20:17:59,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:59,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320838564] [2020-10-12 20:17:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 20:18:04,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:18:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 20:18:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:18:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:04,643 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:04,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:18:04,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320838564] [2020-10-12 20:18:04,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570773873] [2020-10-12 20:18:04,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:04,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:04,772 INFO L87 Difference]: Start difference. First operand 744 states and 1059 transitions. Second operand 5 states. [2020-10-12 20:18:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:08,223 INFO L93 Difference]: Finished difference Result 2175 states and 3088 transitions. [2020-10-12 20:18:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:08,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 20:18:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:08,235 INFO L225 Difference]: With dead ends: 2175 [2020-10-12 20:18:08,235 INFO L226 Difference]: Without dead ends: 1447 [2020-10-12 20:18:08,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-10-12 20:18:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1417. [2020-10-12 20:18:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-12 20:18:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2005 transitions. [2020-10-12 20:18:08,340 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2005 transitions. Word has length 150 [2020-10-12 20:18:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:08,343 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 2005 transitions. [2020-10-12 20:18:08,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2005 transitions. [2020-10-12 20:18:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:18:08,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:08,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:08,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:18:08,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash 303817036, now seen corresponding path program 1 times [2020-10-12 20:18:08,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:08,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087122077] [2020-10-12 20:18:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:13,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:18:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:18:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:18:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:18:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:13,872 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:13,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:13,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:13,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:18:13,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:14,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087122077] [2020-10-12 20:18:14,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:14,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:14,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109601698] [2020-10-12 20:18:14,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:14,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:14,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:14,008 INFO L87 Difference]: Start difference. First operand 1417 states and 2005 transitions. Second operand 5 states. [2020-10-12 20:18:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:17,571 INFO L93 Difference]: Finished difference Result 4069 states and 5720 transitions. [2020-10-12 20:18:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:17,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 20:18:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:17,588 INFO L225 Difference]: With dead ends: 4069 [2020-10-12 20:18:17,589 INFO L226 Difference]: Without dead ends: 2711 [2020-10-12 20:18:17,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2020-10-12 20:18:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2681. [2020-10-12 20:18:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2681 states. [2020-10-12 20:18:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3745 transitions. [2020-10-12 20:18:17,723 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3745 transitions. Word has length 151 [2020-10-12 20:18:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:17,724 INFO L479 AbstractCegarLoop]: Abstraction has 2681 states and 3745 transitions. [2020-10-12 20:18:17,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3745 transitions. [2020-10-12 20:18:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 20:18:17,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:17,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:17,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:18:17,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash -106680324, now seen corresponding path program 1 times [2020-10-12 20:18:17,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:17,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762287422] [2020-10-12 20:18:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:22,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:22,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 20:18:22,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:18:22,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:18:22,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:18:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:23,290 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:23,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:23,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:18:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:23,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762287422] [2020-10-12 20:18:23,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:23,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856421278] [2020-10-12 20:18:23,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:23,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:23,382 INFO L87 Difference]: Start difference. First operand 2681 states and 3745 transitions. Second operand 5 states. [2020-10-12 20:18:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:26,889 INFO L93 Difference]: Finished difference Result 7228 states and 10118 transitions. [2020-10-12 20:18:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:26,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 20:18:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:26,914 INFO L225 Difference]: With dead ends: 7228 [2020-10-12 20:18:26,915 INFO L226 Difference]: Without dead ends: 5194 [2020-10-12 20:18:26,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2020-10-12 20:18:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5164. [2020-10-12 20:18:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5164 states. [2020-10-12 20:18:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 7122 transitions. [2020-10-12 20:18:27,253 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 7122 transitions. Word has length 152 [2020-10-12 20:18:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:27,254 INFO L479 AbstractCegarLoop]: Abstraction has 5164 states and 7122 transitions. [2020-10-12 20:18:27,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 7122 transitions. [2020-10-12 20:18:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:18:27,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:27,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:27,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:18:27,264 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:27,264 INFO L82 PathProgramCache]: Analyzing trace with hash 493890603, now seen corresponding path program 1 times [2020-10-12 20:18:27,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:27,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978817662] [2020-10-12 20:18:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:18:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:18:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:18:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:18:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:32,646 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:32,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:18:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:32,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978817662] [2020-10-12 20:18:32,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:32,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:32,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257401917] [2020-10-12 20:18:32,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:32,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:32,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:32,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:32,786 INFO L87 Difference]: Start difference. First operand 5164 states and 7122 transitions. Second operand 5 states. [2020-10-12 20:18:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:36,151 INFO L93 Difference]: Finished difference Result 14808 states and 20367 transitions. [2020-10-12 20:18:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:36,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:18:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:36,193 INFO L225 Difference]: With dead ends: 14808 [2020-10-12 20:18:36,193 INFO L226 Difference]: Without dead ends: 9974 [2020-10-12 20:18:36,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2020-10-12 20:18:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 9944. [2020-10-12 20:18:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9944 states. [2020-10-12 20:18:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9944 states to 9944 states and 13534 transitions. [2020-10-12 20:18:36,669 INFO L78 Accepts]: Start accepts. Automaton has 9944 states and 13534 transitions. Word has length 153 [2020-10-12 20:18:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:36,670 INFO L479 AbstractCegarLoop]: Abstraction has 9944 states and 13534 transitions. [2020-10-12 20:18:36,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9944 states and 13534 transitions. [2020-10-12 20:18:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:18:36,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:36,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:36,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:18:36,690 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1305276613, now seen corresponding path program 1 times [2020-10-12 20:18:36,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:36,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93465039] [2020-10-12 20:18:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:41,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:41,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:18:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:18:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:18:41,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 20:18:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:18:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:42,191 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:42,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:18:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:42,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93465039] [2020-10-12 20:18:42,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:42,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:42,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078213495] [2020-10-12 20:18:42,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:42,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:42,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:42,307 INFO L87 Difference]: Start difference. First operand 9944 states and 13534 transitions. Second operand 5 states. [2020-10-12 20:18:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:44,627 INFO L93 Difference]: Finished difference Result 16214 states and 22042 transitions. [2020-10-12 20:18:44,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:44,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:18:44,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:44,652 INFO L225 Difference]: With dead ends: 16214 [2020-10-12 20:18:44,652 INFO L226 Difference]: Without dead ends: 6472 [2020-10-12 20:18:44,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2020-10-12 20:18:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6456. [2020-10-12 20:18:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6456 states. [2020-10-12 20:18:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 8766 transitions. [2020-10-12 20:18:44,948 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 8766 transitions. Word has length 154 [2020-10-12 20:18:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:44,950 INFO L479 AbstractCegarLoop]: Abstraction has 6456 states and 8766 transitions. [2020-10-12 20:18:44,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 8766 transitions. [2020-10-12 20:18:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 20:18:44,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:44,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:44,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:18:44,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:44,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1690724573, now seen corresponding path program 1 times [2020-10-12 20:18:44,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:44,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601462615] [2020-10-12 20:18:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:50,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:18:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:18:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:18:50,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 20:18:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:18:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:50,375 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:50,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:18:50,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:50,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:50,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601462615] [2020-10-12 20:18:50,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:50,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:50,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407087581] [2020-10-12 20:18:50,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:50,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:50,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:50,477 INFO L87 Difference]: Start difference. First operand 6456 states and 8766 transitions. Second operand 5 states. [2020-10-12 20:18:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:52,900 INFO L93 Difference]: Finished difference Result 11041 states and 15085 transitions. [2020-10-12 20:18:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:52,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 20:18:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:52,915 INFO L225 Difference]: With dead ends: 11041 [2020-10-12 20:18:52,915 INFO L226 Difference]: Without dead ends: 5266 [2020-10-12 20:18:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-10-12 20:18:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 5262. [2020-10-12 20:18:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5262 states. [2020-10-12 20:18:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7134 transitions. [2020-10-12 20:18:53,144 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7134 transitions. Word has length 158 [2020-10-12 20:18:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:53,144 INFO L479 AbstractCegarLoop]: Abstraction has 5262 states and 7134 transitions. [2020-10-12 20:18:53,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7134 transitions. [2020-10-12 20:18:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 20:18:53,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:53,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:53,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:18:53,153 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1815907920, now seen corresponding path program 1 times [2020-10-12 20:18:53,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:53,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907100054] [2020-10-12 20:18:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:18:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:58,637 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:18:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:18:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:18:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:58,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907100054] [2020-10-12 20:18:58,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:58,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:58,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013742795] [2020-10-12 20:18:58,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:58,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:58,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:58,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:58,739 INFO L87 Difference]: Start difference. First operand 5262 states and 7134 transitions. Second operand 5 states. [2020-10-12 20:19:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:02,228 INFO L93 Difference]: Finished difference Result 12784 states and 17419 transitions. [2020-10-12 20:19:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:02,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 20:19:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:02,246 INFO L225 Difference]: With dead ends: 12784 [2020-10-12 20:19:02,247 INFO L226 Difference]: Without dead ends: 8420 [2020-10-12 20:19:02,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2020-10-12 20:19:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 8393. [2020-10-12 20:19:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8393 states. [2020-10-12 20:19:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8393 states to 8393 states and 11211 transitions. [2020-10-12 20:19:02,719 INFO L78 Accepts]: Start accepts. Automaton has 8393 states and 11211 transitions. Word has length 161 [2020-10-12 20:19:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:02,720 INFO L479 AbstractCegarLoop]: Abstraction has 8393 states and 11211 transitions. [2020-10-12 20:19:02,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8393 states and 11211 transitions. [2020-10-12 20:19:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:19:02,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:02,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:02,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:19:02,731 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash 34344031, now seen corresponding path program 1 times [2020-10-12 20:19:02,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:02,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020258710] [2020-10-12 20:19:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:19:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:19:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 20:19:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:08,183 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:08,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:08,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:19:08,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:08,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020258710] [2020-10-12 20:19:08,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:08,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:19:08,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916770372] [2020-10-12 20:19:08,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:19:08,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:19:08,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:19:08,249 INFO L87 Difference]: Start difference. First operand 8393 states and 11211 transitions. Second operand 10 states. [2020-10-12 20:19:08,623 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:19:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:13,028 INFO L93 Difference]: Finished difference Result 31209 states and 43157 transitions. [2020-10-12 20:19:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:19:13,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-12 20:19:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:13,088 INFO L225 Difference]: With dead ends: 31209 [2020-10-12 20:19:13,088 INFO L226 Difference]: Without dead ends: 26161 [2020-10-12 20:19:13,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-12 20:19:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2020-10-12 20:19:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 16867. [2020-10-12 20:19:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16867 states. [2020-10-12 20:19:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16867 states to 16867 states and 22843 transitions. [2020-10-12 20:19:14,380 INFO L78 Accepts]: Start accepts. Automaton has 16867 states and 22843 transitions. Word has length 162 [2020-10-12 20:19:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:14,380 INFO L479 AbstractCegarLoop]: Abstraction has 16867 states and 22843 transitions. [2020-10-12 20:19:14,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:19:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 16867 states and 22843 transitions. [2020-10-12 20:19:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:19:14,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:14,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:14,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:19:14,398 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1032401294, now seen corresponding path program 1 times [2020-10-12 20:19:14,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:14,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123458110] [2020-10-12 20:19:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:19:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 20:19:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,788 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:19,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:19:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:19,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123458110] [2020-10-12 20:19:19,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:19,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:19,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510032941] [2020-10-12 20:19:19,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:19,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:19,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:19,853 INFO L87 Difference]: Start difference. First operand 16867 states and 22843 transitions. Second operand 5 states. [2020-10-12 20:19:20,260 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:19:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:24,298 INFO L93 Difference]: Finished difference Result 29691 states and 40222 transitions. [2020-10-12 20:19:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:19:24,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 20:19:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:24,333 INFO L225 Difference]: With dead ends: 29691 [2020-10-12 20:19:24,333 INFO L226 Difference]: Without dead ends: 16893 [2020-10-12 20:19:24,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16893 states. [2020-10-12 20:19:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16893 to 16859. [2020-10-12 20:19:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16859 states. [2020-10-12 20:19:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16859 states to 16859 states and 22728 transitions. [2020-10-12 20:19:25,491 INFO L78 Accepts]: Start accepts. Automaton has 16859 states and 22728 transitions. Word has length 162 [2020-10-12 20:19:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:25,492 INFO L479 AbstractCegarLoop]: Abstraction has 16859 states and 22728 transitions. [2020-10-12 20:19:25,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 16859 states and 22728 transitions. [2020-10-12 20:19:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:19:25,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:25,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:25,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:19:25,505 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1619755329, now seen corresponding path program 1 times [2020-10-12 20:19:25,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:25,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624268149] [2020-10-12 20:19:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 20:19:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:19:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:30,875 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:30,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:30,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:30,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:19:30,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:30,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624268149] [2020-10-12 20:19:30,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:30,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:30,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775053324] [2020-10-12 20:19:30,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:30,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:30,919 INFO L87 Difference]: Start difference. First operand 16859 states and 22728 transitions. Second operand 5 states. [2020-10-12 20:19:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:33,443 INFO L93 Difference]: Finished difference Result 30722 states and 41412 transitions. [2020-10-12 20:19:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:33,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 20:19:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:33,467 INFO L225 Difference]: With dead ends: 30722 [2020-10-12 20:19:33,467 INFO L226 Difference]: Without dead ends: 14083 [2020-10-12 20:19:33,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14083 states. [2020-10-12 20:19:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14083 to 14082. [2020-10-12 20:19:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14082 states. [2020-10-12 20:19:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14082 states to 14082 states and 18935 transitions. [2020-10-12 20:19:34,198 INFO L78 Accepts]: Start accepts. Automaton has 14082 states and 18935 transitions. Word has length 163 [2020-10-12 20:19:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:34,198 INFO L479 AbstractCegarLoop]: Abstraction has 14082 states and 18935 transitions. [2020-10-12 20:19:34,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14082 states and 18935 transitions. [2020-10-12 20:19:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:19:34,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:34,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:34,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:19:34,210 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:34,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1261658905, now seen corresponding path program 1 times [2020-10-12 20:19:34,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:34,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821594690] [2020-10-12 20:19:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:19:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:19:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:19:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:19:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:19:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 20:19:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:39,613 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:39,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:19:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:39,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821594690] [2020-10-12 20:19:39,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:39,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:19:39,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535977913] [2020-10-12 20:19:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:19:39,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:39,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:19:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:19:39,683 INFO L87 Difference]: Start difference. First operand 14082 states and 18935 transitions. Second operand 9 states. [2020-10-12 20:19:40,036 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-12 20:19:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:44,782 INFO L93 Difference]: Finished difference Result 37611 states and 52181 transitions. [2020-10-12 20:19:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:19:44,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-10-12 20:19:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:44,828 INFO L225 Difference]: With dead ends: 37611 [2020-10-12 20:19:44,828 INFO L226 Difference]: Without dead ends: 25171 [2020-10-12 20:19:44,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:19:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25171 states. [2020-10-12 20:19:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 20138. [2020-10-12 20:19:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20138 states. [2020-10-12 20:19:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20138 states to 20138 states and 27387 transitions. [2020-10-12 20:19:46,363 INFO L78 Accepts]: Start accepts. Automaton has 20138 states and 27387 transitions. Word has length 165 [2020-10-12 20:19:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:46,363 INFO L479 AbstractCegarLoop]: Abstraction has 20138 states and 27387 transitions. [2020-10-12 20:19:46,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:19:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20138 states and 27387 transitions. [2020-10-12 20:19:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:19:46,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:46,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:46,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:19:46,377 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:46,377 INFO L82 PathProgramCache]: Analyzing trace with hash -441753242, now seen corresponding path program 1 times [2020-10-12 20:19:46,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:46,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116882128] [2020-10-12 20:19:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:19:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:19:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:51,736 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:19:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:51,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116882128] [2020-10-12 20:19:51,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:51,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:51,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635904044] [2020-10-12 20:19:51,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:51,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:51,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:51,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:51,773 INFO L87 Difference]: Start difference. First operand 20138 states and 27387 transitions. Second operand 5 states. [2020-10-12 20:19:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:54,350 INFO L93 Difference]: Finished difference Result 37134 states and 50452 transitions. [2020-10-12 20:19:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:54,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-12 20:19:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:54,370 INFO L225 Difference]: With dead ends: 37134 [2020-10-12 20:19:54,370 INFO L226 Difference]: Without dead ends: 17123 [2020-10-12 20:19:54,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17123 states. [2020-10-12 20:19:55,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17123 to 17123. [2020-10-12 20:19:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17123 states. [2020-10-12 20:19:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 23219 transitions. [2020-10-12 20:19:55,535 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 23219 transitions. Word has length 165 [2020-10-12 20:19:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:55,535 INFO L479 AbstractCegarLoop]: Abstraction has 17123 states and 23219 transitions. [2020-10-12 20:19:55,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 23219 transitions. [2020-10-12 20:19:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:19:55,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:55,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:55,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:19:55,543 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1469381216, now seen corresponding path program 1 times [2020-10-12 20:19:55,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:55,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131848558] [2020-10-12 20:19:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:20:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 20:20:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 20:20:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:00,988 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:01,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131848558] [2020-10-12 20:20:01,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:01,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:20:01,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201913970] [2020-10-12 20:20:01,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:20:01,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:01,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:20:01,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:20:01,042 INFO L87 Difference]: Start difference. First operand 17123 states and 23219 transitions. Second operand 11 states. [2020-10-12 20:20:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:15,206 INFO L93 Difference]: Finished difference Result 105040 states and 150099 transitions. [2020-10-12 20:20:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-12 20:20:15,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-10-12 20:20:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:15,339 INFO L225 Difference]: With dead ends: 105040 [2020-10-12 20:20:15,339 INFO L226 Difference]: Without dead ends: 97828 [2020-10-12 20:20:15,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=677, Invalid=3105, Unknown=0, NotChecked=0, Total=3782 [2020-10-12 20:20:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97828 states. [2020-10-12 20:20:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97828 to 38090. [2020-10-12 20:20:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38090 states. [2020-10-12 20:20:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38090 states to 38090 states and 54766 transitions. [2020-10-12 20:20:18,644 INFO L78 Accepts]: Start accepts. Automaton has 38090 states and 54766 transitions. Word has length 166 [2020-10-12 20:20:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:18,644 INFO L479 AbstractCegarLoop]: Abstraction has 38090 states and 54766 transitions. [2020-10-12 20:20:18,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:20:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 38090 states and 54766 transitions. [2020-10-12 20:20:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:20:18,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:18,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:18,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:20:18,653 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1106121943, now seen corresponding path program 1 times [2020-10-12 20:20:18,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:18,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903272172] [2020-10-12 20:20:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:20:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 20:20:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:24,074 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:24,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:24,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:20:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:24,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903272172] [2020-10-12 20:20:24,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:24,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:20:24,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927618669] [2020-10-12 20:20:24,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:20:24,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:24,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:20:24,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:20:24,126 INFO L87 Difference]: Start difference. First operand 38090 states and 54766 transitions. Second operand 10 states. [2020-10-12 20:20:24,509 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:20:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:39,774 INFO L93 Difference]: Finished difference Result 150823 states and 216975 transitions. [2020-10-12 20:20:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 20:20:39,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-10-12 20:20:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:39,948 INFO L225 Difference]: With dead ends: 150823 [2020-10-12 20:20:39,948 INFO L226 Difference]: Without dead ends: 123780 [2020-10-12 20:20:39,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:20:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123780 states. [2020-10-12 20:20:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123780 to 67180. [2020-10-12 20:20:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67180 states. [2020-10-12 20:20:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67180 states to 67180 states and 95445 transitions. [2020-10-12 20:20:48,213 INFO L78 Accepts]: Start accepts. Automaton has 67180 states and 95445 transitions. Word has length 166 [2020-10-12 20:20:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:48,213 INFO L479 AbstractCegarLoop]: Abstraction has 67180 states and 95445 transitions. [2020-10-12 20:20:48,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:20:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 67180 states and 95445 transitions. [2020-10-12 20:20:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:20:48,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:48,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:48,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:20:48,228 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:48,228 INFO L82 PathProgramCache]: Analyzing trace with hash 617975627, now seen corresponding path program 1 times [2020-10-12 20:20:48,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:48,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31768029] [2020-10-12 20:20:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:20:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:20:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:20:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:20:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:20:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:53,676 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:53,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:53,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:53,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:20:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:53,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31768029] [2020-10-12 20:20:53,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:53,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:20:53,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868487772] [2020-10-12 20:20:53,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:20:53,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:20:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:20:53,722 INFO L87 Difference]: Start difference. First operand 67180 states and 95445 transitions. Second operand 10 states. [2020-10-12 20:20:54,101 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:21:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:24,956 INFO L93 Difference]: Finished difference Result 298967 states and 431746 transitions. [2020-10-12 20:21:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 20:21:24,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-10-12 20:21:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:25,361 INFO L225 Difference]: With dead ends: 298967 [2020-10-12 20:21:25,361 INFO L226 Difference]: Without dead ends: 253260 [2020-10-12 20:21:25,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:21:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253260 states.