/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:50,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:50,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:50,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:50,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:50,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:50,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:50,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:50,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:50,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:50,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:50,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:50,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:50,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:50,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:50,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:50,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:50,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:50,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:50,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:50,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:50,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:50,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:50,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:50,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:50,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:50,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:50,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:50,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:50,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:50,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:50,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:50,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:50,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:50,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:50,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:50,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:50,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:50,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:50,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:50,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:50,972 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 [2020-09-25 14:28:50,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:50,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:51,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:51,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:51,000 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:51,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:51,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:51,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:51,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:51,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:51,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:51,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:51,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:51,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:51,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:51,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:51,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:51,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:51,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:51,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:51,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:51,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:51,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:51,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:51,005 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:51,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:51,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:51,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:51,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:51,513 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:51,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 14:28:51,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563deb341/c1482600c7c14114a88f7a5345946b7a/FLAGb4c17670a [2020-09-25 14:28:52,146 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:52,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 14:28:52,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563deb341/c1482600c7c14114a88f7a5345946b7a/FLAGb4c17670a [2020-09-25 14:28:52,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563deb341/c1482600c7c14114a88f7a5345946b7a [2020-09-25 14:28:52,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:52,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:52,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:52,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:52,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:52,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52, skipping insertion in model container [2020-09-25 14:28:52,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:52,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:52,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:52,778 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:52,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:52,818 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:52,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52 WrapperNode [2020-09-25 14:28:52,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:52,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:52,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:52,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:52,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (1/1) ... [2020-09-25 14:28:52,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:52,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:52,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:52,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:52,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (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 [2020-09-25 14:28:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-25 14:28:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-25 14:28:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:28:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-25 14:28:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-25 14:28:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:53,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:53,325 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:28:53,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:53 BoogieIcfgContainer [2020-09-25 14:28:53,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:53,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:53,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:53,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:52" (1/3) ... [2020-09-25 14:28:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77accecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:53, skipping insertion in model container [2020-09-25 14:28:53,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:52" (2/3) ... [2020-09-25 14:28:53,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77accecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:53, skipping insertion in model container [2020-09-25 14:28:53,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:53" (3/3) ... [2020-09-25 14:28:53,341 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-25 14:28:53,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:53,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:53,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:53,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:53,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:53,433 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:53,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:53,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:53,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:53,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:53,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 14:28:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 14:28:53,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:53,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:53,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:53,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-25 14:28:53,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:53,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097975728] [2020-09-25 14:28:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:28:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 14:28:53,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:53,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:28:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:28:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:28:54,104 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-25 14:28:54,229 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-25 14:28:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:28:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:54,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:54,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 14:28:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:54,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:28:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:54,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097975728] [2020-09-25 14:28:54,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:54,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:28:54,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352103908] [2020-09-25 14:28:54,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:28:54,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:54,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:28:54,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:54,463 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-25 14:28:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:54,733 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-25 14:28:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:28:54,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-25 14:28:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:54,756 INFO L225 Difference]: With dead ends: 60 [2020-09-25 14:28:54,756 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 14:28:54,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:28:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 14:28:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 14:28:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 14:28:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 14:28:54,859 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-25 14:28:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:54,859 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 14:28:54,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:28:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 14:28:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 14:28:54,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:54,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:54,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:54,879 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:54,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-25 14:28:54,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:54,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515345328] [2020-09-25 14:28:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:28:55,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 14:28:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:28:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:28:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,334 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 12 [2020-09-25 14:28:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:28:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:28:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:55,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:28:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:28:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:55,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515345328] [2020-09-25 14:28:55,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:55,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:28:55,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767548289] [2020-09-25 14:28:55,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:28:55,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:28:55,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:55,540 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-25 14:28:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:55,710 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-25 14:28:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:28:55,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 14:28:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:55,712 INFO L225 Difference]: With dead ends: 49 [2020-09-25 14:28:55,713 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:28:55,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:28:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:28:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 14:28:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 14:28:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 14:28:55,732 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-25 14:28:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:55,732 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 14:28:55,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:28:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 14:28:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:28:55,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:55,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:55,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:55,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-25 14:28:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:55,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106921118] [2020-09-25 14:28:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:28:56,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 14:28:56,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:28:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:28:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:56,343 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-25 14:28:56,487 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-25 14:28:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 14:28:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:28:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:28:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:56,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:28:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:56,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:28:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:56,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106921118] [2020-09-25 14:28:56,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:56,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:28:56,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917479111] [2020-09-25 14:28:56,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:28:56,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:56,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:28:56,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:28:56,775 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-09-25 14:28:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:57,075 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-25 14:28:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:28:57,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 14:28:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:57,077 INFO L225 Difference]: With dead ends: 54 [2020-09-25 14:28:57,077 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 14:28:57,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:28:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 14:28:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 14:28:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 14:28:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 14:28:57,091 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-09-25 14:28:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:57,091 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 14:28:57,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:28:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 14:28:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 14:28:57,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:57,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:57,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:28:57,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-25 14:28:57,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:57,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599227158] [2020-09-25 14:28:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:28:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 14:28:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:28:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:28:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:57,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:57,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:28:57,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:28:57,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:28:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:57,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:28:57,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:28:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:28:57,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:57,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:28:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:57,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599227158] [2020-09-25 14:28:57,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:57,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:28:57,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107945439] [2020-09-25 14:28:57,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:28:57,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:28:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:28:57,577 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 11 states. [2020-09-25 14:28:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:57,903 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-09-25 14:28:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:28:57,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-25 14:28:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:57,905 INFO L225 Difference]: With dead ends: 59 [2020-09-25 14:28:57,905 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:28:57,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:28:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:28:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-09-25 14:28:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 14:28:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 14:28:57,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2020-09-25 14:28:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:57,913 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 14:28:57,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:28:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 14:28:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:28:57,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:57,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:57,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:28:57,916 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:57,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-25 14:28:57,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:57,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938041859] [2020-09-25 14:28:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:58,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:28:58,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:58,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 14:28:58,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:58,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:58,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:28:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:28:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:58,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:58,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:58,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:58,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:28:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 14:28:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:28:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:28:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:28:58,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:28:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:58,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:28:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:28:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:58,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:58,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:28:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:58,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:28:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:28:58,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938041859] [2020-09-25 14:28:58,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:58,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:28:58,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599617092] [2020-09-25 14:28:58,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:28:58,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:58,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:28:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:28:58,625 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-09-25 14:28:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:59,007 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 14:28:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:28:59,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-25 14:28:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:59,009 INFO L225 Difference]: With dead ends: 64 [2020-09-25 14:28:59,009 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 14:28:59,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:28:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 14:28:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 14:28:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:28:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 14:28:59,017 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 38 [2020-09-25 14:28:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:59,017 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 14:28:59,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:28:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 14:28:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 14:28:59,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:59,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:59,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:28:59,020 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:59,020 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-25 14:28:59,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:59,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271602495] [2020-09-25 14:28:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:28:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 14:28:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:28:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:28:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:28:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:59,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:28:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 14:28:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:28:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:28:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:28:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:28:59,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:28:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:28:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:28:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:28:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:28:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:28:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:28:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:28:59,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271602495] [2020-09-25 14:28:59,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:59,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:28:59,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315412834] [2020-09-25 14:28:59,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:28:59,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:59,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:28:59,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:28:59,752 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-09-25 14:29:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:00,230 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-25 14:29:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:29:00,230 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-25 14:29:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:00,232 INFO L225 Difference]: With dead ends: 69 [2020-09-25 14:29:00,232 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 14:29:00,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:29:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 14:29:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-25 14:29:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:29:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 14:29:00,240 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2020-09-25 14:29:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:00,240 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 14:29:00,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:29:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 14:29:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:29:00,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:00,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:00,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:29:00,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash 320612812, now seen corresponding path program 1 times [2020-09-25 14:29:00,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:00,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859393784] [2020-09-25 14:29:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 14:29:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 14:29:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:29:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 14:29:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:00,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:00,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:00,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:00,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:29:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:29:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:29:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:01,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:01,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:29:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:29:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:29:01,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859393784] [2020-09-25 14:29:01,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:01,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:29:01,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548288560] [2020-09-25 14:29:01,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:29:01,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:01,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:29:01,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:29:01,367 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2020-09-25 14:29:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:01,911 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-25 14:29:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:29:01,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-25 14:29:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:01,913 INFO L225 Difference]: With dead ends: 74 [2020-09-25 14:29:01,913 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 14:29:01,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-25 14:29:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 14:29:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-25 14:29:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 14:29:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 14:29:01,930 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 47 [2020-09-25 14:29:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:01,930 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 14:29:01,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:29:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 14:29:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 14:29:01,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:01,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:01,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:29:01,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:01,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-25 14:29:01,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:01,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716442018] [2020-09-25 14:29:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:29:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-25 14:29:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:29:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:29:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:02,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:02,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:02,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:29:02,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:29:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:02,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:02,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:29:02,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:29:02,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:29:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:29:02,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716442018] [2020-09-25 14:29:02,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:02,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:29:02,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685807949] [2020-09-25 14:29:02,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:29:02,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:02,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:29:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:29:02,992 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 16 states. [2020-09-25 14:29:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:03,567 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-25 14:29:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:29:03,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-09-25 14:29:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:03,569 INFO L225 Difference]: With dead ends: 79 [2020-09-25 14:29:03,569 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 14:29:03,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-09-25 14:29:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 14:29:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-09-25 14:29:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 14:29:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 14:29:03,576 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 48 [2020-09-25 14:29:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:03,577 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 14:29:03,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:29:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 14:29:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:29:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:03,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:03,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:29:03,579 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1185852169, now seen corresponding path program 2 times [2020-09-25 14:29:03,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:03,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477232304] [2020-09-25 14:29:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:29:04,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-25 14:29:04,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:29:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:29:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 14:29:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:29:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:04,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:04,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:29:04,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:04,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:29:04,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:29:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:04,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:04,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:04,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:04,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:04,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:29:04,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477232304] [2020-09-25 14:29:04,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:04,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:29:04,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285015063] [2020-09-25 14:29:04,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:29:04,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:04,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:29:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:29:04,952 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 17 states. [2020-09-25 14:29:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:05,683 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-09-25 14:29:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:29:05,684 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 14:29:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:05,686 INFO L225 Difference]: With dead ends: 84 [2020-09-25 14:29:05,686 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 14:29:05,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 14:29:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 14:29:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-09-25 14:29:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 14:29:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 14:29:05,694 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 56 [2020-09-25 14:29:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:05,694 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 14:29:05,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:29:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 14:29:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 14:29:05,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:05,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:05,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:29:05,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:05,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-25 14:29:05,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:05,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785554005] [2020-09-25 14:29:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:29:06,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:29:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:29:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 14:29:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:29:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:06,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:29:06,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:06,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:29:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:06,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:29:06,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:06,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:06,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:29:06,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:06,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:06,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 14:29:07,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785554005] [2020-09-25 14:29:07,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:07,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:29:07,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927898306] [2020-09-25 14:29:07,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:29:07,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:29:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:29:07,081 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-09-25 14:29:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:07,760 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-25 14:29:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:29:07,761 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-25 14:29:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:07,762 INFO L225 Difference]: With dead ends: 89 [2020-09-25 14:29:07,762 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 14:29:07,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 14:29:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 14:29:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-09-25 14:29:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 14:29:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 14:29:07,782 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2020-09-25 14:29:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:07,782 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 14:29:07,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:29:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 14:29:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:29:07,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:07,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:07,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:29:07,787 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:07,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1560027652, now seen corresponding path program 2 times [2020-09-25 14:29:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:07,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147009124] [2020-09-25 14:29:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 14:29:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:29:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:29:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 14:29:08,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:29:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:29:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:08,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:08,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:29:08,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:08,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:09,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 14:29:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:09,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:09,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:09,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 14:29:09,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:09,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:29:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:09,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:09,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:09,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:09,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:09,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:09,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:29:09,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147009124] [2020-09-25 14:29:09,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:09,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:29:09,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023609003] [2020-09-25 14:29:09,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:29:09,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:09,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:29:09,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:29:09,579 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-09-25 14:29:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:10,554 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-09-25 14:29:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 14:29:10,554 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 14:29:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:10,555 INFO L225 Difference]: With dead ends: 94 [2020-09-25 14:29:10,555 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 14:29:10,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 14:29:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 14:29:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-09-25 14:29:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 14:29:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 14:29:10,566 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 65 [2020-09-25 14:29:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:10,566 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 14:29:10,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:29:10,566 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 14:29:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 14:29:10,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:10,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:10,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:29:10,568 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:10,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-25 14:29:10,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:10,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586697590] [2020-09-25 14:29:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:29:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 14:29:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 14:29:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:29:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:29:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 14:29:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:29:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:29:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:29:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:29:11,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:11,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 14:29:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:29:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:12,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:12,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:12,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 14:29:12,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586697590] [2020-09-25 14:29:12,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:12,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:29:12,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274824330] [2020-09-25 14:29:12,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:29:12,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:12,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:29:12,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:29:12,304 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 19 states. [2020-09-25 14:29:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:13,294 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-09-25 14:29:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 14:29:13,294 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-25 14:29:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:13,296 INFO L225 Difference]: With dead ends: 99 [2020-09-25 14:29:13,296 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 14:29:13,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 14:29:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 14:29:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-09-25 14:29:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 14:29:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 14:29:13,302 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 66 [2020-09-25 14:29:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:13,303 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 14:29:13,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:29:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 14:29:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 14:29:13,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:13,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:13,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:29:13,304 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:13,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1992760179, now seen corresponding path program 3 times [2020-09-25 14:29:13,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:13,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177604803] [2020-09-25 14:29:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:29:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-09-25 14:29:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 14:29:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:29:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:29:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 14:29:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 14:29:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:29:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:29:14,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 14:29:14,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:29:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:14,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:14,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 14:29:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:14,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:15,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 14:29:15,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:15,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 14:29:15,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:29:15,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:29:15,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:29:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177604803] [2020-09-25 14:29:15,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:15,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:29:15,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946115301] [2020-09-25 14:29:15,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:29:15,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:29:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:29:15,491 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 21 states. [2020-09-25 14:29:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:16,534 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-09-25 14:29:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 14:29:16,535 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-09-25 14:29:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:16,536 INFO L225 Difference]: With dead ends: 104 [2020-09-25 14:29:16,536 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 14:29:16,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 14:29:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 14:29:16,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-25 14:29:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 14:29:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 14:29:16,544 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2020-09-25 14:29:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:16,544 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 14:29:16,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:29:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 14:29:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 14:29:16,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:16,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:16,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:29:16,547 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-25 14:29:16,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:16,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146944873] [2020-09-25 14:29:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:29:17,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:29:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:17,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:17,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:17,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:17,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:17,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:17,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:17,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:29:17,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 14:29:17,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:17,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 14:29:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:29:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:29:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 14:29:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:29:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:29:18,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 14:29:18,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:18,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:29:18,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:18,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:29:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:18,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:29:18,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:29:18,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:18,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 14:29:18,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146944873] [2020-09-25 14:29:18,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:18,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 14:29:18,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058877700] [2020-09-25 14:29:18,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 14:29:18,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 14:29:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:29:18,847 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 22 states. [2020-09-25 14:29:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:19,895 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-09-25 14:29:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 14:29:19,897 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-25 14:29:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:19,898 INFO L225 Difference]: With dead ends: 109 [2020-09-25 14:29:19,899 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 14:29:19,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 14:29:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 14:29:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-25 14:29:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 14:29:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 14:29:19,905 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 75 [2020-09-25 14:29:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:19,905 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 14:29:19,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 14:29:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 14:29:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 14:29:19,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:19,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:19,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:29:19,907 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1771228740, now seen corresponding path program 3 times [2020-09-25 14:29:19,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:19,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046739213] [2020-09-25 14:29:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:29:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 14:29:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 14:29:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:29:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:21,132 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-25 14:29:21,264 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-25 14:29:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:21,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:29:21,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 14:29:21,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:21,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 14:29:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 14:29:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:21,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:29:21,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:21,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:29:21,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:21,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 14:29:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:29:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:21,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:29:22,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 14:29:22,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:29:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:22,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 14:29:22,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 14:29:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 14:29:22,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:29:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:22,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:22,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 14:29:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046739213] [2020-09-25 14:29:22,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:22,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 14:29:22,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331375164] [2020-09-25 14:29:22,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 14:29:22,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:22,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 14:29:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:29:22,929 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 23 states. [2020-09-25 14:29:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:24,339 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-09-25 14:29:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 14:29:24,343 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-25 14:29:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:24,344 INFO L225 Difference]: With dead ends: 114 [2020-09-25 14:29:24,344 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 14:29:24,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 14:29:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 14:29:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-09-25 14:29:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 14:29:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 14:29:24,355 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 83 [2020-09-25 14:29:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:24,355 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 14:29:24,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 14:29:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 14:29:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 14:29:24,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:24,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:24,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:29:24,357 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-25 14:29:24,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:24,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060919291] [2020-09-25 14:29:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 14:29:25,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-09-25 14:29:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 14:29:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 14:29:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:25,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:25,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:29:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 14:29:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 14:29:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:29:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:29:25,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 14:29:25,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 14:29:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:29:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:29:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 14:29:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:29:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:29:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:29:26,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:29:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:26,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:29:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:26,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 14:29:26,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060919291] [2020-09-25 14:29:26,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:26,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 14:29:26,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051363083] [2020-09-25 14:29:26,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 14:29:26,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 14:29:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:29:26,807 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 23 states. [2020-09-25 14:29:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:28,208 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-09-25 14:29:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 14:29:28,208 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-09-25 14:29:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:28,209 INFO L225 Difference]: With dead ends: 119 [2020-09-25 14:29:28,210 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 14:29:28,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 14:29:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 14:29:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-09-25 14:29:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 14:29:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 14:29:28,216 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 84 [2020-09-25 14:29:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:28,217 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 14:29:28,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 14:29:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 14:29:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 14:29:28,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:28,218 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:28,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:29:28,219 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash -901694575, now seen corresponding path program 4 times [2020-09-25 14:29:28,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:28,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224424387] [2020-09-25 14:29:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:29,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 14:29:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:29:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:29,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:29,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 14:29:29,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:29,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 14:29:29,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:29,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:29,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 14:29:29,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:29:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:29:30,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 14:29:30,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 14:29:30,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 14:29:30,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:29:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 14:29:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 14:29:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:29:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:29:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 14:29:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:29:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:30,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 14:29:30,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:31,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 14:29:31,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 14:29:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:29:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:31,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:29:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:31,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-25 14:29:31,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224424387] [2020-09-25 14:29:31,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:31,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 14:29:31,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226959967] [2020-09-25 14:29:31,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 14:29:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 14:29:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:29:31,649 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 25 states. [2020-09-25 14:29:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:33,346 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-09-25 14:29:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 14:29:33,347 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 92 [2020-09-25 14:29:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:33,348 INFO L225 Difference]: With dead ends: 124 [2020-09-25 14:29:33,349 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 14:29:33,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 14:29:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 14:29:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-09-25 14:29:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 14:29:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 14:29:33,355 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 92 [2020-09-25 14:29:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:33,356 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 14:29:33,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 14:29:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 14:29:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 14:29:33,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:33,358 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:33,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:29:33,358 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:33,358 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-25 14:29:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:33,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034250083] [2020-09-25 14:29:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:34,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 14:29:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:29:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:34,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:34,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:34,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:34,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:34,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:34,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:34,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:34,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:29:34,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 14:29:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:34,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 14:29:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:29:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 14:29:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:29:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:35,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:29:35,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:29:35,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 14:29:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:29:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:29:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 14:29:35,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:29:35,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:29:35,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 14:29:35,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:29:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:29:35,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:29:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:29:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:35,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:35,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:35,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:29:35,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:35,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:29:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:29:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:36,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:36,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:29:36,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:36,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:36,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:36,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:36,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-25 14:29:36,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034250083] [2020-09-25 14:29:36,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:36,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 14:29:36,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080390018] [2020-09-25 14:29:36,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 14:29:36,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 14:29:36,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:29:36,348 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 26 states. [2020-09-25 14:29:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:38,140 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-09-25 14:29:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 14:29:38,143 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 93 [2020-09-25 14:29:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:38,144 INFO L225 Difference]: With dead ends: 129 [2020-09-25 14:29:38,144 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 14:29:38,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=2657, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 14:29:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 14:29:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2020-09-25 14:29:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 14:29:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 14:29:38,151 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 93 [2020-09-25 14:29:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:38,151 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 14:29:38,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 14:29:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 14:29:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:29:38,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:38,153 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:38,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 14:29:38,153 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:38,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1968989964, now seen corresponding path program 4 times [2020-09-25 14:29:38,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:38,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30441965] [2020-09-25 14:29:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:29:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-09-25 14:29:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-25 14:29:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:29:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 14:29:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:39,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:39,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:29:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-25 14:29:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:40,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-25 14:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:29:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 14:29:40,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 14:29:40,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:40,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-25 14:29:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:29:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 14:29:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:40,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:29:40,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:29:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:29:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 14:29:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:29:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:29:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:29:41,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 14:29:41,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:29:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:41,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:29:41,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:29:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:29:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:29:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:29:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:29:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:41,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:29:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-25 14:29:41,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30441965] [2020-09-25 14:29:41,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:41,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 14:29:41,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112333552] [2020-09-25 14:29:41,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 14:29:41,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 14:29:41,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:29:41,954 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 27 states.