/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/array-crafted/mapsum1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:35:09,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:35:09,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:35:09,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:35:09,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:35:09,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:35:09,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:35:09,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:35:09,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:35:09,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:35:09,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:35:09,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:35:09,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:35:09,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:35:09,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:35:09,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:35:09,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:35:09,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:35:09,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:35:09,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:35:09,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:35:09,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:35:09,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:35:09,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:35:09,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:35:09,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:35:09,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:35:09,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:35:09,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:35:09,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:35:09,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:35:09,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:35:09,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:35:09,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:35:09,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:35:09,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:35:09,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:35:09,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:35:09,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:35:09,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:35:09,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:35:09,939 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 09:35:09,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:35:09,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:35:09,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:35:09,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:35:09,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:35:09,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:35:09,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:35:09,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:35:09,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:35:09,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:35:09,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:35:09,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:35:09,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:35:09,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:35:09,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:35:09,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:35:09,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:35:09,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:35:09,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:35:09,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:35:09,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:35:09,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:35:09,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:35:09,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:35:09,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:35:09,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:35:09,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:35:09,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:35:09,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:35:09,968 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 09:35:10,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:35:10,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:35:10,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:35:10,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:35:10,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:35:10,388 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum1.i [2020-10-12 09:35:10,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afed8e0ae/3e4f63df96224d25a8a4476e5cc64a6e/FLAG4200b26a2 [2020-10-12 09:35:10,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:35:10,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum1.i [2020-10-12 09:35:10,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afed8e0ae/3e4f63df96224d25a8a4476e5cc64a6e/FLAG4200b26a2 [2020-10-12 09:35:11,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afed8e0ae/3e4f63df96224d25a8a4476e5cc64a6e [2020-10-12 09:35:11,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:35:11,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:35:11,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:11,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:35:11,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:35:11,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4f649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11, skipping insertion in model container [2020-10-12 09:35:11,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:35:11,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:35:11,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:11,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:35:11,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:11,591 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:35:11,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11 WrapperNode [2020-10-12 09:35:11,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:11,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:35:11,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:35:11,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:35:11,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (1/1) ... [2020-10-12 09:35:11,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:35:11,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:35:11,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:35:11,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:35:11,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (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 09:35:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:35:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:35:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-12 09:35:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:35:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:35:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:35:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:35:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:35:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:35:12,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:35:12,103 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:35:12,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:12 BoogieIcfgContainer [2020-10-12 09:35:12,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:35:12,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:35:12,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:35:12,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:35:12,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:35:11" (1/3) ... [2020-10-12 09:35:12,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe4548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:12, skipping insertion in model container [2020-10-12 09:35:12,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:11" (2/3) ... [2020-10-12 09:35:12,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe4548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:12, skipping insertion in model container [2020-10-12 09:35:12,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:12" (3/3) ... [2020-10-12 09:35:12,117 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2020-10-12 09:35:12,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:35:12,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:35:12,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:35:12,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:35:12,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:35:12,181 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:35:12,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:35:12,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:35:12,181 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:35:12,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:35:12,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:35:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:35:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:35:12,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:12,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:12,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 09:35:12,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:12,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509962182] [2020-10-12 09:35:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:35:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-12 09:35:13,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 09:35:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:35:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:35:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:14,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:35:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:14,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 09:35:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:14,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 09:35:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 09:35:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:14,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509962182] [2020-10-12 09:35:14,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:35:14,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 09:35:14,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788797364] [2020-10-12 09:35:14,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:14,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:14,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:14,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:14,399 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-12 09:35:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:14,895 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 09:35:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:14,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 09:35:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:14,909 INFO L225 Difference]: With dead ends: 83 [2020-10-12 09:35:14,909 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:35:14,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:35:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 09:35:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 09:35:14,969 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 09:35:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:14,970 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 09:35:14,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 09:35:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 09:35:14,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:14,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 09:35:14,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:35:14,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-12 09:35:14,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:14,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905342169] [2020-10-12 09:35:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:15,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:35:15,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-12 09:35:15,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 09:35:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:16,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:16,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 09:35:16,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:16,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:16,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 09:35:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:16,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:16,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:35:16,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:16,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905342169] [2020-10-12 09:35:16,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:16,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:35:16,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171642249] [2020-10-12 09:35:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:35:16,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:35:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:16,115 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 09:35:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:16,213 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 09:35:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:35:16,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 09:35:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:16,215 INFO L225 Difference]: With dead ends: 58 [2020-10-12 09:35:16,215 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:35:16,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:35:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:35:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:35:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:35:16,224 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 09:35:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:16,225 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:35:16,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:35:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:35:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:35:16,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:16,227 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:16,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:35:16,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 09:35:16,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:16,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785810609] [2020-10-12 09:35:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-12 09:35:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:35:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:35:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 09:35:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:21,886 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-12 09:35:22,125 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-12 09:35:22,659 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-12 09:35:23,040 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-10-12 09:35:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:23,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:23,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:23,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-12 09:35:23,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:24,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-12 09:35:24,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-12 09:35:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 09:35:25,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785810609] [2020-10-12 09:35:25,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:25,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:35:25,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944696877] [2020-10-12 09:35:25,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:35:25,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:35:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:35:25,457 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 17 states. [2020-10-12 09:35:26,805 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-12 09:35:27,055 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-12 09:35:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:27,168 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-12 09:35:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:35:27,168 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-12 09:35:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:27,170 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:27,170 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:35:27,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:35:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:35:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-12 09:35:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 09:35:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-12 09:35:27,198 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2020-10-12 09:35:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:27,198 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-12 09:35:27,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:35:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-12 09:35:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 09:35:27,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:27,203 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:27,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:27,204 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1711204411, now seen corresponding path program 3 times [2020-10-12 09:35:27,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:27,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839181360] [2020-10-12 09:35:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:32,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:35:32,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:32,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 09:35:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:32,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:32,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:32,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:32,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:32,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:32,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 09:35:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:32,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:32,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:35:32,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:32,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:32,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839181360] [2020-10-12 09:35:32,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:32,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:32,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570857546] [2020-10-12 09:35:32,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:32,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:32,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:32,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:32,390 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-10-12 09:35:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:32,536 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-12 09:35:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:32,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-12 09:35:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:32,538 INFO L225 Difference]: With dead ends: 65 [2020-10-12 09:35:32,539 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:32,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:32,549 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-12 09:35:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:32,549 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:32,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:32,555 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:32,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:32,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 09:35:32,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:32,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323060801] [2020-10-12 09:35:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:32,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:37,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:35:37,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:37,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 09:35:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:35:37,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:35:37,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323060801] [2020-10-12 09:35:37,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:37,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:37,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120208894] [2020-10-12 09:35:37,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:37,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:37,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:37,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:37,761 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:37,916 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:37,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:37,917 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:37,917 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:37,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:37,924 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:37,924 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:37,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:37,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:37,925 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:37,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:37,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 09:35:37,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:37,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353712412] [2020-10-12 09:35:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:42,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:35:42,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 09:35:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:42,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:42,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:43,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:43,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 09:35:43,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:35:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:43,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:43,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 09:35:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:35:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:43,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:35:43,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:35:43,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353712412] [2020-10-12 09:35:43,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:43,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:35:43,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153840126] [2020-10-12 09:35:43,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:35:43,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:35:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:43,207 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 09:35:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:43,393 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 09:35:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:35:43,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 09:35:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:43,395 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:35:43,395 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 09:35:43,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 09:35:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 09:35:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 09:35:43,404 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 09:35:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:43,406 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 09:35:43,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:35:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 09:35:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 09:35:43,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:43,408 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:43,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:35:43,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 09:35:43,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:43,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183271729] [2020-10-12 09:35:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:35:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:35:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:48,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:48,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 09:35:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:48,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:48,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 09:35:48,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 09:35:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 09:35:48,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183271729] [2020-10-12 09:35:48,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:48,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:35:48,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016700927] [2020-10-12 09:35:48,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:35:48,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:35:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:35:48,647 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 09:35:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:48,855 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 09:35:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:35:48,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 09:35:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:48,857 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:35:48,858 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:35:48,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:35:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:35:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:35:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:35:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:35:48,864 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 09:35:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:48,865 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:35:48,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:35:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:35:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:35:48,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:48,866 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:48,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:35:48,866 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:48,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 09:35:48,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:48,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359509091] [2020-10-12 09:35:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:53,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:53,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:53,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:53,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:35:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:35:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 09:35:54,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359509091] [2020-10-12 09:35:54,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:54,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:35:54,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705782923] [2020-10-12 09:35:54,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:54,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:54,152 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:35:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:54,425 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:35:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:35:54,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:35:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:54,427 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:35:54,427 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:35:54,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:35:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:35:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:35:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:35:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:35:54,433 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:35:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:54,434 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:35:54,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:35:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:35:54,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:54,435 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:54,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:35:54,435 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 09:35:54,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:54,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938145772] [2020-10-12 09:35:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:59,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:59,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:35:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:35:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:35:59,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938145772] [2020-10-12 09:35:59,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:59,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:35:59,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283205558] [2020-10-12 09:35:59,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:35:59,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:59,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:35:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:35:59,739 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:35:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:59,990 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:35:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:59,990 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:35:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:59,991 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:35:59,991 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:35:59,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:35:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:36:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:36:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:36:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:36:00,005 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:36:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:00,006 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:36:00,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:36:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:36:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:36:00,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:00,008 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:00,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:36:00,008 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 09:36:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:00,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616789132] [2020-10-12 09:36:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:05,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:05,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:05,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:05,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:36:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:36:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 09:36:05,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616789132] [2020-10-12 09:36:05,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:05,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:36:05,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560821672] [2020-10-12 09:36:05,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:36:05,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:36:05,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:36:05,407 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:36:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:05,702 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:36:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:36:05,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:36:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:05,704 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:36:05,704 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:36:05,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:36:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:36:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:36:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:36:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:36:05,711 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:36:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:05,712 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:36:05,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:36:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:36:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:36:05,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:05,713 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:05,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:36:05,713 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 09:36:05,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:05,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481672973] [2020-10-12 09:36:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:10,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:36:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:36:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:11,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:11,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:11,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 09:36:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 09:36:11,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481672973] [2020-10-12 09:36:11,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:11,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:36:11,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443416576] [2020-10-12 09:36:11,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:36:11,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:36:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:36:11,108 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:36:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:11,451 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:36:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:36:11,452 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:36:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:11,453 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:36:11,454 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:36:11,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:36:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:36:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:36:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:36:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:36:11,462 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:36:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:11,462 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:36:11,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:36:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:36:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:36:11,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:11,463 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:11,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:36:11,464 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 09:36:11,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:11,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924202850] [2020-10-12 09:36:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 09:36:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:16,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 09:36:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:36:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:36:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 09:36:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:36:16,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924202850] [2020-10-12 09:36:16,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:16,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:36:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536468735] [2020-10-12 09:36:16,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:36:16,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:36:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:36:16,931 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:36:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:17,315 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:36:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:36:17,316 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:36:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:17,317 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:36:17,317 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:36:17,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:36:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:36:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:36:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:36:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:36:17,324 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:36:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:17,325 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:36:17,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:36:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:36:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:36:17,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:17,326 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:17,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:36:17,326 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 09:36:17,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:17,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812890886] [2020-10-12 09:36:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:36:22,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:36:22,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 09:36:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:36:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:36:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 09:36:22,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812890886] [2020-10-12 09:36:22,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:22,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:36:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874174551] [2020-10-12 09:36:22,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:36:22,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:36:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:36:22,819 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:36:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:23,222 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:36:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:36:23,222 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:36:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:23,223 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:36:23,223 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:36:23,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:36:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:36:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:36:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:36:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:36:23,232 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:36:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:23,232 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:36:23,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:36:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:36:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:36:23,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:23,234 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:23,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:36:23,235 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:23,235 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 09:36:23,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:23,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783744494] [2020-10-12 09:36:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:28,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:28,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 09:36:28,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:36:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 09:36:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:36:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-12 09:36:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 09:36:29,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783744494] [2020-10-12 09:36:29,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:29,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:36:29,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524217910] [2020-10-12 09:36:29,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:36:29,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:29,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:36:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:29,293 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:36:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:29,732 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:36:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:36:29,733 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:36:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:29,734 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:36:29,734 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:36:29,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:36:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:36:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:36:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:36:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:36:29,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:36:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:29,743 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:36:29,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:36:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:36:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:36:29,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:29,744 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:29,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:36:29,745 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 09:36:29,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:29,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453994624] [2020-10-12 09:36:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:36:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:35,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 09:36:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:36:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 09:36:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 09:36:35,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453994624] [2020-10-12 09:36:35,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:35,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:36:35,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072998046] [2020-10-12 09:36:35,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:36:35,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:36:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:36:35,688 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:36:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:36,092 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:36:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:36:36,093 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:36:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:36,097 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:36:36,097 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:36:36,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:36:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:36:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:36:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:36:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:36:36,110 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:36:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:36,110 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:36:36,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:36:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:36:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:36:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:36,112 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:36,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:36:36,112 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:36,113 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 09:36:36,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:36,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427023211] [2020-10-12 09:36:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:41,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 09:36:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:41,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:36:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:36:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 09:36:41,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:36:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:41,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 09:36:41,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 09:36:41,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427023211] [2020-10-12 09:36:41,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:41,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:36:41,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894488833] [2020-10-12 09:36:41,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:36:41,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:41,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:36:41,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:41,973 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:36:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:42,505 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:36:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:36:42,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:36:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:42,507 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:36:42,507 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:42,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:36:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:36:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:36:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:36:42,514 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:36:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:42,514 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:36:42,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:36:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:36:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:36:42,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:42,516 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:42,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:36:42,517 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 09:36:42,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:42,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899287128] [2020-10-12 09:36:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:47,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:47,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:47,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:36:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 09:36:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:36:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 09:36:48,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899287128] [2020-10-12 09:36:48,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:48,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:36:48,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179057131] [2020-10-12 09:36:48,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:36:48,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:36:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:36:48,342 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:36:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:48,889 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:36:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:36:48,889 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:36:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:48,890 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:36:48,891 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:36:48,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:36:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:36:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:36:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:36:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:36:48,898 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:36:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:48,898 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:36:48,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:36:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:36:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:36:48,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:48,900 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:48,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:36:48,900 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:48,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 09:36:48,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:48,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445437914] [2020-10-12 09:36:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:54,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:36:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 09:36:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:36:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:54,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:54,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 09:36:54,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 09:36:54,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445437914] [2020-10-12 09:36:54,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:54,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:36:54,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140234568] [2020-10-12 09:36:54,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:36:54,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:54,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:36:54,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:36:54,868 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:36:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:55,456 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:36:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:36:55,456 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:36:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:55,457 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:36:55,457 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:36:55,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:36:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:36:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:36:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:36:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:36:55,464 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:36:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:55,465 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:36:55,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:36:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:36:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:36:55,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:55,466 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:55,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:36:55,467 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:55,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 09:36:55,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:55,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016018608] [2020-10-12 09:36:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:37:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:37:00,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:37:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:37:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:01,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:01,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:37:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:01,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:01,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 09:37:01,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:01,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 09:37:01,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016018608] [2020-10-12 09:37:01,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:01,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:37:01,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645038199] [2020-10-12 09:37:01,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:37:01,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:37:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:37:01,498 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:37:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:02,174 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:37:02,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:37:02,174 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:37:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:02,175 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:37:02,176 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:37:02,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:37:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:37:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:37:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:37:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:37:02,182 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:37:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:02,182 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:37:02,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:37:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:37:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:37:02,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:02,184 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:02,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:37:02,185 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 09:37:02,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:02,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520304001] [2020-10-12 09:37:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 09:37:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:07,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-12 09:37:07,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:37:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:37:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:08,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 09:37:08,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520304001] [2020-10-12 09:37:08,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:08,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:37:08,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586744823] [2020-10-12 09:37:08,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:37:08,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:08,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:37:08,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:37:08,381 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:37:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:09,149 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:37:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:37:09,150 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:37:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:09,151 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:37:09,151 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:37:09,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:37:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:37:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:37:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:37:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:37:09,163 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:37:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:09,164 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:37:09,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:37:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:37:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:37:09,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:09,168 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:09,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:37:09,169 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:09,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 09:37:09,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:09,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30204150] [2020-10-12 09:37:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:37:14,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 09:37:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:37:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:15,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:15,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:15,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 09:37:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:37:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 09:37:15,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30204150] [2020-10-12 09:37:15,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:15,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:37:15,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097038688] [2020-10-12 09:37:15,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:37:15,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:37:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:37:15,698 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:37:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:16,376 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:37:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:37:16,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:37:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:16,379 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:37:16,379 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:37:16,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:37:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:37:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:37:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:37:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:37:16,387 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:37:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:16,387 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:37:16,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:37:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:37:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:37:16,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:16,389 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:16,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:37:16,389 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 09:37:16,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:16,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907796962] [2020-10-12 09:37:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:16,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:21,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:37:21,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 09:37:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:37:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:22,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 09:37:22,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:37:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:22,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 09:37:22,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907796962] [2020-10-12 09:37:22,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:22,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:37:22,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45334570] [2020-10-12 09:37:22,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:37:22,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:37:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:37:22,770 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:37:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:23,526 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:37:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:37:23,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:37:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:23,530 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:37:23,530 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:37:23,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:37:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:37:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:37:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:37:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:37:23,541 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:37:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:23,542 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:37:23,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:37:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:37:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:37:23,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:23,543 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:23,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:37:23,544 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 09:37:23,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:23,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392033959] [2020-10-12 09:37:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:37:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:28,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:28,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:28,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:37:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:29,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:29,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:29,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:29,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 09:37:29,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:29,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:37:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 09:37:30,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392033959] [2020-10-12 09:37:30,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:30,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:37:30,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059975069] [2020-10-12 09:37:30,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:37:30,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:37:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:37:30,067 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:37:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:30,853 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:37:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:37:30,854 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:37:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:30,855 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:37:30,855 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:37:30,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:37:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:37:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:37:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:37:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:37:30,861 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:37:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:30,862 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:37:30,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:37:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:37:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:37:30,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:30,863 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:30,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:37:30,864 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 09:37:30,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:30,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430536956] [2020-10-12 09:37:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:35,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:35,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:37:35,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 09:37:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 09:37:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:35,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:35,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:36,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-12 09:37:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:37:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:37:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:37:37,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430536956] [2020-10-12 09:37:37,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:37,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:37:37,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866646267] [2020-10-12 09:37:37,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:37:37,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:37,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:37:37,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:37:37,547 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:37:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:38,399 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:37:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:37:38,401 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:37:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:38,402 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:37:38,402 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:37:38,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:37:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:37:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:37:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:37:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:37:38,408 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:37:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:38,408 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:37:38,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:37:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:37:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:37:38,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:38,410 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:38,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:37:38,410 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:38,410 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 09:37:38,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:38,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088292380] [2020-10-12 09:37:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:43,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:43,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:37:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:37:43,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 09:37:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:43,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:43,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:43,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-12 09:37:43,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:37:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:44,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:44,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:37:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:44,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 09:37:45,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088292380] [2020-10-12 09:37:45,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:45,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:37:45,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157372956] [2020-10-12 09:37:45,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:37:45,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:45,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:37:45,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:37:45,330 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:37:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:46,207 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:37:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:37:46,208 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:37:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:46,208 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:37:46,209 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:37:46,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 09:37:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:37:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:37:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:37:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:37:46,216 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:37:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:46,216 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:37:46,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:37:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:37:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:37:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:46,218 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:46,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:37:46,218 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 09:37:46,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:46,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379593902] [2020-10-12 09:37:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:37:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 09:37:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:51,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:51,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:51,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:37:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:37:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:52,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:52,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:52,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-12 09:37:52,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 09:37:52,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379593902] [2020-10-12 09:37:52,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:52,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:37:52,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189280959] [2020-10-12 09:37:52,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:37:52,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:37:52,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:37:52,992 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:37:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:53,871 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:37:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:37:53,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:37:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:53,873 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:37:53,873 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:37:53,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:37:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:37:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:37:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:37:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:37:53,880 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:37:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:53,881 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:37:53,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:37:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:37:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:37:53,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:53,882 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:53,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:37:53,882 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 09:37:53,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:53,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023865427] [2020-10-12 09:37:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:58,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:58,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:37:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 09:37:58,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 09:37:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:38:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:38:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 09:38:01,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023865427] [2020-10-12 09:38:01,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:01,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:38:01,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753460744] [2020-10-12 09:38:01,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:38:01,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:38:01,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:38:01,288 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:38:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:02,303 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:38:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:38:02,303 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:38:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:02,304 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:38:02,305 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:38:02,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:38:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:38:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:38:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:38:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:38:02,312 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:38:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:02,312 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:38:02,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:38:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:38:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:38:02,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:02,314 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:02,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:38:02,314 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:02,314 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 09:38:02,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:02,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700748905] [2020-10-12 09:38:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:38:07,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:38:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:07,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:07,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:07,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:38:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-12 09:38:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:38:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 09:38:09,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700748905] [2020-10-12 09:38:09,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:09,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:38:09,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905166127] [2020-10-12 09:38:09,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:38:09,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:38:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:38:09,866 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:38:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:10,927 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:38:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:38:10,928 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:38:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:10,929 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:38:10,929 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:38:10,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:38:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:38:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:38:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:38:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:38:10,935 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:38:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:10,936 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:38:10,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:38:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:38:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:38:10,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:10,937 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:10,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:38:10,938 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:10,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 09:38:10,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:10,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886067612] [2020-10-12 09:38:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:38:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:17,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:38:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:17,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:17,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-12 09:38:17,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:38:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-12 09:38:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 09:38:18,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886067612] [2020-10-12 09:38:18,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:18,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:38:18,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068219039] [2020-10-12 09:38:18,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:38:18,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:38:18,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:38:18,541 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:38:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:19,657 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:38:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:38:19,658 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:38:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:19,659 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:38:19,659 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:38:19,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:38:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:38:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:38:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:38:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:38:19,671 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:38:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:19,671 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:38:19,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:38:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:38:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:38:19,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:19,673 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:19,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:38:19,674 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 09:38:19,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:19,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231727080] [2020-10-12 09:38:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:25,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 09:38:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:38:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:38:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 09:38:27,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231727080] [2020-10-12 09:38:27,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:27,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:38:27,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492839986] [2020-10-12 09:38:27,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:38:27,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:27,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:38:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:38:27,163 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:38:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:28,310 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:38:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:38:28,310 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:38:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:28,311 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:38:28,312 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:38:28,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:38:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:38:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:38:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:38:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:38:28,317 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:38:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:28,318 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:38:28,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:38:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:38:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:38:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:28,319 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:28,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:38:28,320 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 09:38:28,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:28,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446239246] [2020-10-12 09:38:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:33,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:33,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:33,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:38:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:38:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:35,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:35,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:35,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-12 09:38:35,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 09:38:35,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446239246] [2020-10-12 09:38:35,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:35,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:38:35,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563088547] [2020-10-12 09:38:35,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:38:35,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:35,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:38:35,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:38:35,931 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:38:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:37,169 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:38:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:38:37,170 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:38:37,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:37,171 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:38:37,171 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:38:37,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:38:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:38:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:38:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:38:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:38:37,182 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:38:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:37,182 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:38:37,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:38:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:38:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:38:37,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:37,184 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:37,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:38:37,185 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 09:38:37,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:37,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458614593] [2020-10-12 09:38:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:38:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-12 09:38:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:42,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:42,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:43,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:38:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-12 09:38:44,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:38:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:45,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 09:38:45,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458614593] [2020-10-12 09:38:45,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:45,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:38:45,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393730170] [2020-10-12 09:38:45,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:38:45,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:45,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:38:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:38:45,115 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:38:46,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:46,362 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:38:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:38:46,363 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:38:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:46,364 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:38:46,364 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:38:46,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:38:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:38:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:38:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:38:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:38:46,372 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:38:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:46,372 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:38:46,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:38:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:38:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:38:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:46,374 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:46,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:38:46,374 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 09:38:46,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:46,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886169834] [2020-10-12 09:38:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:51,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:51,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:38:51,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 09:38:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:51,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:52,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:38:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:38:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:54,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:54,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:54,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-12 09:38:54,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 09:38:54,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886169834] [2020-10-12 09:38:54,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:54,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:38:54,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994804154] [2020-10-12 09:38:54,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:38:54,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:54,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:38:54,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:38:54,355 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:38:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:55,649 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:38:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:38:55,650 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:38:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:55,651 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:38:55,651 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:38:55,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:38:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:38:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:38:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:38:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:38:55,659 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:38:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:55,659 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:38:55,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:38:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:38:55,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:38:55,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:55,661 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:55,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:38:55,661 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:55,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:55,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 09:38:55,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:55,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135291848] [2020-10-12 09:38:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:00,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:00,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:00,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:00,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:39:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:39:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:04,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:04,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-12 09:39:04,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 09:39:04,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135291848] [2020-10-12 09:39:04,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:04,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:39:04,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377242516] [2020-10-12 09:39:04,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:39:04,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:04,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:39:04,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:39:04,154 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:39:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:05,613 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:39:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:39:05,614 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:39:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:05,615 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:39:05,615 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:39:05,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:39:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:39:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:39:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:39:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:39:05,622 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:39:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:05,622 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:39:05,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:39:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:39:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:39:05,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:05,623 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:05,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:39:05,623 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 09:39:05,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:05,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45043801] [2020-10-12 09:39:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...