/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/bor3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:34:58,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:34:58,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:34:58,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:34:58,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:34:58,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:34:58,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:34:58,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:34:58,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:34:58,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:34:58,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:34:58,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:34:58,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:34:58,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:34:58,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:34:58,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:34:58,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:34:58,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:34:58,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:34:58,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:34:58,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:34:58,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:34:58,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:34:58,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:34:58,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:34:58,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:34:58,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:34:58,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:34:58,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:34:58,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:34:58,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:34:58,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:34:58,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:34:58,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:34:58,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:34:58,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:34:58,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:34:58,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:34:58,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:34:58,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:34:58,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:34:58,989 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 09:34:59,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:34:59,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:34:59,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:34:59,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:34:59,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:34:59,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:34:59,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:34:59,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:34:59,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:34:59,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:34:59,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:34:59,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:34:59,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:34:59,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:34:59,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:34:59,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:34:59,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:34:59,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:34:59,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:34:59,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:34:59,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:34:59,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:34:59,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:34:59,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:34:59,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:34:59,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:34:59,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:34:59,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:34:59,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:34:59,022 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 09:34:59,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:34:59,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:34:59,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:34:59,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:34:59,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:34:59,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor3.i [2020-10-12 09:34:59,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9240abaef/c8dc90da67104e66ad282ce27ad0d462/FLAGf4217eb61 [2020-10-12 09:35:00,039 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:35:00,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor3.i [2020-10-12 09:35:00,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9240abaef/c8dc90da67104e66ad282ce27ad0d462/FLAGf4217eb61 [2020-10-12 09:35:00,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9240abaef/c8dc90da67104e66ad282ce27ad0d462 [2020-10-12 09:35:00,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:35:00,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:35:00,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:00,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:35:00,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:35:00,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f253ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00, skipping insertion in model container [2020-10-12 09:35:00,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:35:00,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:35:00,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:00,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:35:00,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:00,798 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:35:00,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00 WrapperNode [2020-10-12 09:35:00,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:00,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:35:00,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:35:00,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:35:00,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:35:00,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:35:00,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:35:00,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:35:00,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (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 09:35:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:35:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:35:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-12 09:35:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:35:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:35:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:35:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-12 09:35:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:35:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:35:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:35:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:35:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:35:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:35:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:35:01,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:35:01,378 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:35:01,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:01 BoogieIcfgContainer [2020-10-12 09:35:01,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:35:01,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:35:01,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:35:01,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:35:01,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:35:00" (1/3) ... [2020-10-12 09:35:01,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6356d7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:01, skipping insertion in model container [2020-10-12 09:35:01,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (2/3) ... [2020-10-12 09:35:01,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6356d7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:01, skipping insertion in model container [2020-10-12 09:35:01,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:01" (3/3) ... [2020-10-12 09:35:01,394 INFO L109 eAbstractionObserver]: Analyzing ICFG bor3.i [2020-10-12 09:35:01,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:35:01,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:35:01,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:35:01,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:35:01,512 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:35:01,512 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:35:01,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:35:01,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:35:01,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:35:01,513 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:35:01,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:35:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:35:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:35:01,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:01,557 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 09:35:01,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 09:35:01,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:01,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129926660] [2020-10-12 09:35:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:35:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-12 09:35:02,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 09:35:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 09:35:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:02,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 09:35:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:02,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:02,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:02,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:02,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:02,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:02,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:02,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:02,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:02,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:02,956 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 09:35:02,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129926660] [2020-10-12 09:35:02,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:35:02,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:35:02,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393505862] [2020-10-12 09:35:02,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:35:02,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:02,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:35:02,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:35:02,991 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-12 09:35:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:03,134 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-12 09:35:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:35:03,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 09:35:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:03,147 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:03,148 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 09:35:03,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 09:35:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 09:35:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 09:35:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-12 09:35:03,212 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-12 09:35:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:03,213 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-12 09:35:03,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:35:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-12 09:35:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 09:35:03,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:03,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 09:35:03,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:35:03,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-12 09:35:03,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:03,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047859757] [2020-10-12 09:35:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:35:06,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2861 [2020-10-12 09:35:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 09:35:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:06,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:06,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 09:35:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 09:35:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:35:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 09:35:06,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047859757] [2020-10-12 09:35:06,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:06,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:35:06,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427549731] [2020-10-12 09:35:06,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:35:06,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:06,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:35:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:06,332 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-12 09:35:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:06,523 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-12 09:35:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:35:06,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-12 09:35:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:06,527 INFO L225 Difference]: With dead ends: 48 [2020-10-12 09:35:06,527 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:35:06,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 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 09:35:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:35:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:35:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:35:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:35:06,551 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-12 09:35:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:06,551 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:35:06,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:35:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:35:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:35:06,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:06,557 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 09:35:06,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:35:06,558 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 09:35:06,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:06,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563789234] [2020-10-12 09:35:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:35:11,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 09:35:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:11,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:11,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:11,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:11,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:11,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563789234] [2020-10-12 09:35:11,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:11,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:35:11,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900927443] [2020-10-12 09:35:11,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:35:11,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:35:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:35:11,795 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 09:35:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:11,957 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 09:35:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:35:11,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:35:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:11,959 INFO L225 Difference]: With dead ends: 52 [2020-10-12 09:35:11,959 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 09:35:11,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 09:35:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 09:35:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:35:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:35:11,969 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 09:35:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:11,969 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:35:11,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:35:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:35:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 09:35:11,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:11,971 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 09:35:11,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:11,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:11,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-12 09:35:11,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:11,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050868000] [2020-10-12 09:35:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:16,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:35:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:35:16,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 09:35:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:17,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:17,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 09:35:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:17,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:17,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:17,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:35:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:17,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 09:35:17,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 09:35:17,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050868000] [2020-10-12 09:35:17,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:17,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:17,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32023419] [2020-10-12 09:35:17,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:17,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:17,164 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 09:35:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:17,351 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 09:35:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:17,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 09:35:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:17,353 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:17,354 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:17,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:17,364 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 09:35:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:17,365 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:17,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:17,367 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 09:35:17,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:17,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 09:35:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:17,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291326967] [2020-10-12 09:35:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:22,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:35:22,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:22,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:22,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:22,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:22,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:22,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:22,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:22,565 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 09:35:22,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291326967] [2020-10-12 09:35:22,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:22,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970729651] [2020-10-12 09:35:22,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:22,568 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:22,749 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:22,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:22,750 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:22,750 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:22,752 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 09:35:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:22,763 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:22,764 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:22,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:22,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:22,767 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 09:35:22,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:22,768 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 09:35:22,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:22,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483620951] [2020-10-12 09:35:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:27,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:35:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 09:35:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:27,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:27,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:27,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:27,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:27,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:27,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:35:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 09:35:27,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:35:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:27,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 09:35:27,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,987 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 09:35:27,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483620951] [2020-10-12 09:35:27,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:27,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:35:27,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267978016] [2020-10-12 09:35:27,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:35:27,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:27,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:35:27,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:27,990 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 09:35:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:28,171 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 09:35:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:35:28,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 09:35:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:28,172 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:35:28,173 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 09:35:28,174 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 09:35:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 09:35:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 09:35:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 09:35:28,180 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 09:35:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:28,180 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 09:35:28,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:35:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 09:35:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 09:35:28,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:28,181 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 09:35:28,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:35:28,182 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 09:35:28,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:28,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262591280] [2020-10-12 09:35:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:35:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:33,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:33,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:33,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:33,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 09:35:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:35:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 09:35:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:33,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:33,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:33,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:33,405 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 09:35:33,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262591280] [2020-10-12 09:35:33,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:33,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:35:33,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744039377] [2020-10-12 09:35:33,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:35:33,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:33,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:35:33,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:35:33,407 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 09:35:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:33,584 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 09:35:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:35:33,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 09:35:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:33,585 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:35:33,586 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:35:33,587 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 09:35:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:35:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:35:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:35:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:35:33,593 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 09:35:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:33,593 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:35:33,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:35:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:35:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:35:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:33,594 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 09:35:33,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:35:33,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 09:35:33,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:33,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227404286] [2020-10-12 09:35:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:35:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:35:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:38,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:38,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:38,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,813 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 09:35:38,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227404286] [2020-10-12 09:35:38,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:38,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:35:38,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525668064] [2020-10-12 09:35:38,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:38,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:38,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:38,815 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:35:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:39,033 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:35:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:35:39,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:35:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:39,035 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:35:39,035 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:35:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:35:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:35:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:35:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:35:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:35:39,041 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:35:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:39,042 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:35:39,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:35:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:35:39,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:39,043 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 09:35:39,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:35:39,044 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 09:35:39,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:39,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430800716] [2020-10-12 09:35:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 09:35:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:44,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:44,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:35:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:35:44,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:35:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:44,284 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 09:35:44,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430800716] [2020-10-12 09:35:44,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:44,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:35:44,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310032767] [2020-10-12 09:35:44,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:35:44,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:44,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:35:44,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:35:44,287 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:35:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:44,546 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:35:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:44,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:35:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:44,548 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:35:44,548 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:35:44,550 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 09:35:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:35:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:35:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:35:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:35:44,556 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:35:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:44,556 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:35:44,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:35:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:35:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:35:44,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:44,558 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 09:35:44,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:35:44,558 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:44,558 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 09:35:44,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:44,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340606643] [2020-10-12 09:35:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 09:35:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:49,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:49,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:49,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:35:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:35:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:49,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:49,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:49,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:49,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:49,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:49,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:49,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:49,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:49,823 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 09:35:49,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340606643] [2020-10-12 09:35:49,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:49,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:35:49,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019555113] [2020-10-12 09:35:49,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:35:49,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:49,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:35:49,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:49,825 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:35:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:50,099 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:35:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:35:50,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:35:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:50,100 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:35:50,100 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:35:50,101 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 09:35:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:35:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:35:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:35:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:35:50,110 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:35:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:50,110 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:35:50,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:35:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:35:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:35:50,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:50,114 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 09:35:50,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:35:50,115 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:50,115 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 09:35:50,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:50,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977532203] [2020-10-12 09:35:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:35:55,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:35:55,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:35:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:55,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:35:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:35:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:55,451 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 09:35:55,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977532203] [2020-10-12 09:35:55,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:55,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:35:55,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532780031] [2020-10-12 09:35:55,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:35:55,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:55,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:35:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:35:55,453 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:35:55,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:55,746 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:35:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:35:55,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:35:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:55,748 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:35:55,748 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:35:55,749 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 09:35:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:35:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:35:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:35:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:35:55,755 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:35:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:55,755 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:35:55,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:35:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:35:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:35:55,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:55,756 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 09:35:55,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:35:55,757 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:55,757 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 09:35:55,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:55,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903422588] [2020-10-12 09:35:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:36:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:00,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:00,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:00,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:36:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:00,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:36:00,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:36:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:01,020 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 09:36:01,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903422588] [2020-10-12 09:36:01,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:01,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:36:01,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835958510] [2020-10-12 09:36:01,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:36:01,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:36:01,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:36:01,022 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:36:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:01,320 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:36:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:36:01,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:36:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:01,322 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:36:01,322 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:36:01,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:36:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:36:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:36:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:36:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:36:01,329 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:36:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:01,329 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:36:01,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:36:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:36:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:36:01,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:01,332 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 09:36:01,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:36:01,332 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 09:36:01,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:01,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697687993] [2020-10-12 09:36:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:36:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:06,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:36:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:06,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:36:06,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:36:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 09:36:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,644 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 09:36:06,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697687993] [2020-10-12 09:36:06,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:06,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:36:06,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341766326] [2020-10-12 09:36:06,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:36:06,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:36:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:36:06,647 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:36:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:07,096 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:36:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:36:07,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:36:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:07,098 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:36:07,098 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:36:07,101 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 09:36:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:36:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:36:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:36:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:36:07,121 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:36:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:07,121 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:36:07,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:36:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:36:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:36:07,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:07,127 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 09:36:07,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:36:07,128 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 09:36:07,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:07,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697544277] [2020-10-12 09:36:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:36:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:12,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:12,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:36:12,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:12,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:36:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:36:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:36:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,481 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 09:36:12,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697544277] [2020-10-12 09:36:12,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:12,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:36:12,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271504528] [2020-10-12 09:36:12,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:36:12,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:12,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:36:12,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:12,484 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:36:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:12,874 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:36:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:36:12,874 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:36:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:12,875 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:36:12,876 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:36:12,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:36:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:36:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:36:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:36:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:36:12,883 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:36:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:12,883 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:36:12,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:36:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:36:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:36:12,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:12,885 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 09:36:12,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:36:12,885 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 09:36:12,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:12,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004212114] [2020-10-12 09:36:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:17,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 09:36:17,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:36:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:18,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:18,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:18,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 09:36:18,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:36:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 09:36:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:18,282 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 09:36:18,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004212114] [2020-10-12 09:36:18,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:18,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:36:18,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111238] [2020-10-12 09:36:18,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:36:18,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:18,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:36:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:36:18,284 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:36:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:18,672 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:36:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:36:18,673 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:36:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:18,674 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:36:18,674 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:36:18,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:36:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:36:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:36:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:36:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:36:18,681 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:36:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:18,682 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:36:18,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:36:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:36:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:36:18,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:18,683 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 09:36:18,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:36:18,684 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 09:36:18,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:18,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281759703] [2020-10-12 09:36:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:18,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:36:23,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:23,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 09:36:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:23,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 09:36:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:36:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:36:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:24,135 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 09:36:24,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281759703] [2020-10-12 09:36:24,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:24,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:36:24,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717417296] [2020-10-12 09:36:24,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:36:24,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:24,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:36:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:24,138 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:36:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:24,565 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:36:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:36:24,566 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:36:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:24,566 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:36:24,567 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:24,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:36:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:36:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:36:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:36:24,573 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:36:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:24,573 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:36:24,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:36:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:36:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:36:24,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:24,575 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 09:36:24,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:36:24,575 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 09:36:24,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:24,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267999496] [2020-10-12 09:36:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 09:36:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:36:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:29,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:36:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:29,992 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 09:36:29,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267999496] [2020-10-12 09:36:29,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:29,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:36:29,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540787545] [2020-10-12 09:36:29,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:36:29,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:29,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:36:29,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:36:29,995 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:36:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:30,423 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:36:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:36:30,424 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:36:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:30,424 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:36:30,424 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:36:30,426 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 09:36:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:36:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:36:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:36:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:36:30,432 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:36:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:30,432 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:36:30,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:36:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:36:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:36:30,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:30,434 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 09:36:30,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:36:30,434 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:30,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 09:36:30,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:30,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271963472] [2020-10-12 09:36:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:36:35,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:35,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:35,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:36:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:36:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:36:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:35,889 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 09:36:35,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271963472] [2020-10-12 09:36:35,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:35,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:36:35,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112680814] [2020-10-12 09:36:35,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:36:35,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:35,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:36:35,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:36:35,891 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:36:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:36,357 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:36:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:36:36,360 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:36:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:36,361 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:36:36,361 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:36:36,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:36:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:36:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:36:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:36:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:36:36,373 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:36:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:36,373 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:36:36,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:36:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:36:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:36:36,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:36,375 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 09:36:36,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:36:36,376 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:36,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:36,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 09:36:36,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:36,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461892098] [2020-10-12 09:36:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:36:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:36:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:36:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:36:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 09:36:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:36:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:41,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:41,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 09:36:41,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:41,894 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 09:36:41,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461892098] [2020-10-12 09:36:41,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:41,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:36:41,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661296724] [2020-10-12 09:36:41,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:36:41,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:41,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:36:41,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:36:41,897 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:36:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:42,430 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:36:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:36:42,431 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:36:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:42,432 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:36:42,432 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:36:42,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:36:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:36:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:36:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:36:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:36:42,440 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:36:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:42,440 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:36:42,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:36:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:36:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:36:42,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:42,441 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 09:36:42,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:36:42,442 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 09:36:42,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:42,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739621247] [2020-10-12 09:36:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:36:47,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:36:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:36:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:47,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:36:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:47,990 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 09:36:47,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739621247] [2020-10-12 09:36:47,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:47,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:36:47,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198372318] [2020-10-12 09:36:47,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:36:47,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:36:47,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:36:47,993 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:36:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:48,524 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:36:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:36:48,524 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:36:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:48,525 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:36:48,526 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:36:48,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:36:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:36:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:36:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:36:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:36:48,532 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:36:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:48,533 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:36:48,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:36:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:36:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:36:48,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:48,534 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 09:36:48,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:36:48,535 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 09:36:48,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:48,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229076863] [2020-10-12 09:36:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:36:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:36:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 09:36:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:54,148 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 09:36:54,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229076863] [2020-10-12 09:36:54,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:54,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:36:54,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342991246] [2020-10-12 09:36:54,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:36:54,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:36:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:36:54,151 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:36:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:54,769 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:36:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:36:54,769 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:36:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:54,770 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:36:54,770 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:36:54,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:36:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:36:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:36:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:36:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:36:54,776 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:36:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:54,776 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:36:54,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:36:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:36:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:36:54,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:54,778 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 09:36:54,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:36:54,778 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 09:36:54,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:54,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647035641] [2020-10-12 09:36:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:36:59,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 09:36:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 09:36:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:37:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:37:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:00,438 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 09:37:00,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647035641] [2020-10-12 09:37:00,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:00,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:37:00,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772236720] [2020-10-12 09:37:00,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:37:00,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:37:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:37:00,440 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:37:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:01,061 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:37:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:37:01,062 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:37:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:01,063 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:37:01,063 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:37:01,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:37:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:37:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:37:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:37:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:37:01,075 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:37:01,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:01,075 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:37:01,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:37:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:37:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:37:01,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:01,077 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 09:37:01,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:37:01,077 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 09:37:01,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342616777] [2020-10-12 09:37:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:37:06,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:06,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 09:37:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:37:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:37:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 09:37:06,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,800 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 09:37:06,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342616777] [2020-10-12 09:37:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:06,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:37:06,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082259367] [2020-10-12 09:37:06,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:37:06,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:06,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:37:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:37:06,802 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:37:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:07,440 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:37:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:37:07,440 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:37:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:07,442 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:37:07,442 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:37:07,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:37:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:37:07,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:37:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:37:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:37:07,449 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:37:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:07,449 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:37:07,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:37:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:37:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:37:07,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:07,451 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 09:37:07,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:37:07,451 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:07,452 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 09:37:07,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:07,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993329482] [2020-10-12 09:37:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:37:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:37:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:37:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:37:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:13,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:13,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 09:37:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:13,339 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 09:37:13,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993329482] [2020-10-12 09:37:13,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:13,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:37:13,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061462671] [2020-10-12 09:37:13,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:37:13,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:13,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:37:13,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:37:13,343 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:37:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:14,202 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:37:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:37:14,203 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:37:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:14,203 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:37:14,204 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:37:14,206 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 09:37:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:37:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:37:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:37:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:37:14,211 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:37:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:37:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:37:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:37:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:37:14,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:14,215 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 09:37:14,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:37:14,215 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 09:37:14,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:14,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496554842] [2020-10-12 09:37:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 09:37:19,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:37:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:20,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 09:37:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:20,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:37:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:20,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 09:37:20,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:20,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:20,381 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 09:37:20,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496554842] [2020-10-12 09:37:20,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:20,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:37:20,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704646997] [2020-10-12 09:37:20,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:37:20,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:37:20,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:37:20,386 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:37:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:21,192 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:37:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:37:21,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:37:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:21,193 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:37:21,193 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:37:21,195 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 09:37:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:37:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:37:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:37:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:37:21,205 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:37:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:21,205 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:37:21,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:37:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:37:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:37:21,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:21,207 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 09:37:21,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:37:21,207 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:21,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 09:37:21,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:21,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970504598] [2020-10-12 09:37:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:37:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:37:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,996 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 09:37:26,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970504598] [2020-10-12 09:37:26,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:26,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:37:26,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109451903] [2020-10-12 09:37:26,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:37:26,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:26,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:37:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:37:26,998 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:37:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:27,803 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:37:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:37:27,804 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:37:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:27,805 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:37:27,805 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:37:27,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:37:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:37:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:37:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:37:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:37:27,811 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:37:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:27,812 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:37:27,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:37:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:37:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:37:27,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:27,813 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 09:37:27,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:37:27,814 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 09:37:27,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:27,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250496131] [2020-10-12 09:37:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 09:37:32,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:37:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 09:37:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:37:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,743 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 09:37:33,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250496131] [2020-10-12 09:37:33,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:33,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:37:33,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80662607] [2020-10-12 09:37:33,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:37:33,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:37:33,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:37:33,745 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:37:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:34,614 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:37:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:37:34,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:37:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:34,616 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:37:34,616 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:37:34,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:37:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:37:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:37:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:37:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:37:34,623 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:37:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:34,623 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:37:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:37:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:37:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:37:34,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:34,625 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 09:37:34,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:37:34,625 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:34,625 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 09:37:34,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:34,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545447022] [2020-10-12 09:37:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:37:39,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:39,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:39,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 09:37:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:37:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:37:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 09:37:40,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,525 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 09:37:40,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545447022] [2020-10-12 09:37:40,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:40,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:37:40,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109242657] [2020-10-12 09:37:40,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:37:40,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:40,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:37:40,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:37:40,527 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:37:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:41,382 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:37:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:37:41,382 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:37:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:41,384 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:37:41,384 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:37:41,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:37:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:37:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:37:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:37:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:37:41,391 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:37:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:41,391 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:37:41,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:37:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:37:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:37:41,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:41,393 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 09:37:41,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:37:41,393 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:41,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 09:37:41,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:41,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877526556] [2020-10-12 09:37:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:46,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:46,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 09:37:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:37:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:47,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 09:37:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:37:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:47,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-12 09:37:47,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:47,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:47,663 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 09:37:47,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877526556] [2020-10-12 09:37:47,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:47,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:37:47,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433392014] [2020-10-12 09:37:47,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:37:47,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:37:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:37:47,667 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:37:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:48,567 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:37:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:37:48,568 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:37:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:48,569 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:37:48,569 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:37:48,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:37:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:37:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:37:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:37:48,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:37:48,575 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:37:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:48,576 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:37:48,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:37:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:37:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:37:48,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:48,577 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 09:37:48,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:37:48,578 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:48,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 09:37:48,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:48,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316800576] [2020-10-12 09:37:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:37:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:37:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:54,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 09:37:54,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,572 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 09:37:54,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316800576] [2020-10-12 09:37:54,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:54,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:37:54,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980333288] [2020-10-12 09:37:54,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:37:54,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:37:54,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:37:54,574 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:37:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:55,599 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:37:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:37:55,599 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:37:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:55,600 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:37:55,600 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:37:55,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:37:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:37:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:37:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:37:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:37:55,609 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:37:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:55,609 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:37:55,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:37:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:37:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:37:55,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:55,610 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 09:37:55,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:37:55,611 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 09:37:55,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:55,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819141194] [2020-10-12 09:37:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:38:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:38:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:38:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,656 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 09:38:01,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819141194] [2020-10-12 09:38:01,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:01,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:38:01,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27802288] [2020-10-12 09:38:01,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:38:01,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:01,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:38:01,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:38:01,658 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:38:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:02,709 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:38:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:38:02,710 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:38:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:02,711 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:38:02,711 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:38:02,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:38:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:38:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:38:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:38:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:38:02,717 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:38:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:02,717 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:38:02,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:38:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:38:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:38:02,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:02,719 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 09:38:02,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:38:02,719 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 09:38:02,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:02,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647641797] [2020-10-12 09:38:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:38:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 09:38:08,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:38:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:08,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 09:38:08,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,846 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 09:38:08,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647641797] [2020-10-12 09:38:08,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:08,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:38:08,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944190] [2020-10-12 09:38:08,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:38:08,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:08,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:38:08,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:38:08,848 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:38:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:09,879 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:38:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:38:09,879 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:38:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:09,880 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:38:09,881 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:38:09,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:38:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:38:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:38:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:38:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:38:09,887 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:38:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:09,887 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:38:09,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:38:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:38:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:38:09,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:09,889 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 09:38:09,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:38:09,890 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:09,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 09:38:09,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:09,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156430314] [2020-10-12 09:38:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:14,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:14,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:38:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:38:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:16,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,086 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 09:38:16,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156430314] [2020-10-12 09:38:16,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:16,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:38:16,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253249605] [2020-10-12 09:38:16,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:38:16,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:16,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:38:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:38:16,089 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:38:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:17,205 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:38:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:38:17,206 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:38:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:17,207 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:38:17,207 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:38:17,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:38:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:38:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:38:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:38:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:38:17,214 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:38:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:17,214 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:38:17,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:38:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:38:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:38:17,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:17,216 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 09:38:17,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:38:17,216 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 09:38:17,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:17,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118920827] [2020-10-12 09:38:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:22,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:38:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:38:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-12 09:38:23,576 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 09:38:23,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118920827] [2020-10-12 09:38:23,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:23,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:38:23,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505084963] [2020-10-12 09:38:23,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:38:23,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:23,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:38:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:38:23,578 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:38:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:24,737 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:38:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:38:24,737 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:38:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:24,739 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:38:24,739 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:38:24,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:38:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:38:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:38:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:38:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:38:24,745 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:38:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:24,746 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:38:24,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:38:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:38:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:38:24,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:24,748 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 09:38:24,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:38:24,748 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 09:38:24,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:24,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204693292] [2020-10-12 09:38:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 09:38:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:29,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 09:38:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:30,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 09:38:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 09:38:31,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204693292] [2020-10-12 09:38:31,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:31,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:38:31,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556610897] [2020-10-12 09:38:31,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:38:31,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:31,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:38:31,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:38:31,065 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 09:38:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:32,322 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 09:38:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:38:32,323 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 09:38:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:32,324 INFO L225 Difference]: With dead ends: 180 [2020-10-12 09:38:32,324 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 09:38:32,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 09:38:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 09:38:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 09:38:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 09:38:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 09:38:32,332 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 09:38:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:32,332 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 09:38:32,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:38:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 09:38:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 09:38:32,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:32,334 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 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 09:38:32,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:38:32,334 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:32,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-12 09:38:32,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:32,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376204701] [2020-10-12 09:38:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 09:38:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 09:38:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 09:38:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:38,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:38:38,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376204701] [2020-10-12 09:38:38,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:38,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:38:38,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96773188] [2020-10-12 09:38:38,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:38:38,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:38:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:38:38,745 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-12 09:38:39,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:39,992 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-12 09:38:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:38:39,993 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-12 09:38:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:39,994 INFO L225 Difference]: With dead ends: 184 [2020-10-12 09:38:39,994 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 09:38:39,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 09:38:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 09:38:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 09:38:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 09:38:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 09:38:40,000 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-12 09:38:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:40,000 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 09:38:40,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:38:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 09:38:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 09:38:40,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:40,002 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 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 09:38:40,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:38:40,002 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:40,003 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-12 09:38:40,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:40,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252558472] [2020-10-12 09:38:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:45,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:45,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:45,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:45,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:45,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:45,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:45,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 09:38:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:46,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 09:38:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 09:38:46,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252558472] [2020-10-12 09:38:46,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:46,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:38:46,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097281765] [2020-10-12 09:38:46,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:38:46,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:38:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:38:46,467 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-12 09:38:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:47,899 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-12 09:38:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:38:47,900 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-12 09:38:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:47,901 INFO L225 Difference]: With dead ends: 188 [2020-10-12 09:38:47,901 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 09:38:47,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-12 09:38:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 09:38:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-12 09:38:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:38:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-12 09:38:47,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-12 09:38:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:47,910 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-12 09:38:47,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:38:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-12 09:38:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 09:38:47,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:47,911 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 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 09:38:47,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:38:47,912 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1512400705, now seen corresponding path program 37 times [2020-10-12 09:38:47,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:47,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549634915] [2020-10-12 09:38:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:52,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:52,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 09:38:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:54,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:54,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 09:38:54,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-12 09:38:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:54,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-12 09:38:54,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549634915] [2020-10-12 09:38:54,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:54,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-12 09:38:54,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893728094] [2020-10-12 09:38:54,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-12 09:38:54,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:54,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-12 09:38:54,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:38:54,469 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-12 09:38:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:55,872 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-12 09:38:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 09:38:55,873 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-12 09:38:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:55,874 INFO L225 Difference]: With dead ends: 192 [2020-10-12 09:38:55,874 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 09:38:55,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 09:38:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 09:38:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-12 09:38:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 09:38:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-12 09:38:55,881 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-12 09:38:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:55,881 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-12 09:38:55,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-12 09:38:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-12 09:38:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 09:38:55,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:55,883 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 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 09:38:55,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 09:38:55,883 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:55,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1796938303, now seen corresponding path program 38 times [2020-10-12 09:38:55,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:55,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314258330] [2020-10-12 09:38:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...