/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=LOWLEXORDER --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-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:32:14,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:32:14,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:32:14,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:32:14,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:32:14,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:32:14,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:32:14,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:32:15,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:32:15,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:32:15,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:32:15,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:32:15,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:32:15,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:32:15,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:32:15,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:32:15,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:32:15,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:32:15,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:32:15,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:32:15,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:32:15,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:32:15,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:32:15,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:32:15,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:32:15,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:32:15,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:32:15,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:32:15,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:32:15,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:32:15,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:32:15,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:32:15,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:32:15,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:32:15,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:32:15,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:32:15,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:32:15,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:32:15,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:32:15,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:32:15,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:32:15,033 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 [2020-09-24 21:32:15,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:32:15,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:32:15,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:32:15,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:32:15,062 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:32:15,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:32:15,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:32:15,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:32:15,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:32:15,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:32:15,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:32:15,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:32:15,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:32:15,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:32:15,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:32:15,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:32:15,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:15,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:32:15,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:32:15,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:32:15,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:32:15,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:32:15,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:32:15,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:32:15,067 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:32:15,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:32:15,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:32:15,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:32:15,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:32:15,571 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:32:15,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-24 21:32:15,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dbf9580/e937f1ea1ef345bcb4cc82960f03c053/FLAG266867bfe [2020-09-24 21:32:16,288 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:16,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-24 21:32:16,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dbf9580/e937f1ea1ef345bcb4cc82960f03c053/FLAG266867bfe [2020-09-24 21:32:16,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dbf9580/e937f1ea1ef345bcb4cc82960f03c053 [2020-09-24 21:32:16,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:16,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:16,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:16,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:16,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:16,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:16,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce0c36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16, skipping insertion in model container [2020-09-24 21:32:16,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:16,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:16,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:16,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:16,932 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:16,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:16,977 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16 WrapperNode [2020-09-24 21:32:16,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:16,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:16,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:16,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:16,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:16,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (1/1) ... [2020-09-24 21:32:17,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:17,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:17,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:17,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:17,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (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 [2020-09-24 21:32:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 21:32:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 21:32:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 21:32:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 21:32:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:17,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:17,488 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:17,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:17 BoogieIcfgContainer [2020-09-24 21:32:17,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:17,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:17,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:17,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:17,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:16" (1/3) ... [2020-09-24 21:32:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c748b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:17, skipping insertion in model container [2020-09-24 21:32:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:16" (2/3) ... [2020-09-24 21:32:17,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c748b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:17, skipping insertion in model container [2020-09-24 21:32:17,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:17" (3/3) ... [2020-09-24 21:32:17,503 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-24 21:32:17,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:17,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:17,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:17,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:17,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:17,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:17,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:17,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:17,645 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:17,645 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:17,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 21:32:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:17,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:17,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:17,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:17,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 21:32:17,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:17,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711723507] [2020-09-24 21:32:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 21:32:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:32:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:18,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:18,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711723507] [2020-09-24 21:32:18,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:18,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:18,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902052743] [2020-09-24 21:32:18,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:18,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:18,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:18,182 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 21:32:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:18,331 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 21:32:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:18,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:18,347 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:32:18,348 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 21:32:18,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 21:32:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 21:32:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:32:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 21:32:18,415 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 21:32:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:18,415 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 21:32:18,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 21:32:18,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:18,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:18,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:18,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:18,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 21:32:18,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:18,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781586810] [2020-09-24 21:32:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:18,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 21:32:18,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:32:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:18,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:18,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:32:18,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:18,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781586810] [2020-09-24 21:32:18,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:18,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:18,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970607717] [2020-09-24 21:32:18,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:18,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:18,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:18,690 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 21:32:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:18,773 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 21:32:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:18,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:18,776 INFO L225 Difference]: With dead ends: 50 [2020-09-24 21:32:18,776 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 21:32:18,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 21:32:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 21:32:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:32:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 21:32:18,788 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 21:32:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:18,789 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 21:32:18,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 21:32:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:18,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:18,791 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:32:18,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:18,792 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 21:32:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:18,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922960833] [2020-09-24 21:32:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-09-24 21:32:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:20,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:20,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:21,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:21,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:21,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:32:21,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922960833] [2020-09-24 21:32:21,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:21,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:21,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511073294] [2020-09-24 21:32:21,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:21,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:21,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:21,127 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-24 21:32:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:21,275 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-24 21:32:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:21,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:21,278 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:32:21,278 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:32:21,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:32:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-24 21:32:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:32:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-24 21:32:21,295 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-24 21:32:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:21,295 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-24 21:32:21,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-24 21:32:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:21,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:21,300 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:32:21,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:21,301 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:21,302 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 21:32:21,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:21,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758151904] [2020-09-24 21:32:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-09-24 21:32:23,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:23,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-24 21:32:23,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:23,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:32:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:24,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:32:24,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758151904] [2020-09-24 21:32:24,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:24,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:24,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419883993] [2020-09-24 21:32:24,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:24,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:24,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:24,044 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-24 21:32:24,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:24,228 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2020-09-24 21:32:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:24,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:32:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:24,235 INFO L225 Difference]: With dead ends: 82 [2020-09-24 21:32:24,235 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 21:32:24,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 21:32:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2020-09-24 21:32:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 21:32:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-24 21:32:24,264 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 35 [2020-09-24 21:32:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:24,265 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-24 21:32:24,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-24 21:32:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:24,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:24,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:24,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:24,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:24,274 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 21:32:24,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:24,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626572321] [2020-09-24 21:32:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:32:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:29,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4278 [2020-09-24 21:32:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 21:32:33,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:33,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:33,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 21:32:33,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626572321] [2020-09-24 21:32:33,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:33,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:33,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665678784] [2020-09-24 21:32:33,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:33,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:33,988 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 9 states. [2020-09-24 21:32:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:34,188 INFO L93 Difference]: Finished difference Result 146 states and 211 transitions. [2020-09-24 21:32:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:32:34,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 21:32:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:34,191 INFO L225 Difference]: With dead ends: 146 [2020-09-24 21:32:34,191 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 21:32:34,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 21:32:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-09-24 21:32:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 21:32:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2020-09-24 21:32:34,212 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 51 [2020-09-24 21:32:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:34,212 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2020-09-24 21:32:34,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2020-09-24 21:32:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 21:32:34,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:34,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 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, 1, 1, 1, 1] [2020-09-24 21:32:34,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:34,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 21:32:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:34,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731981511] [2020-09-24 21:32:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:34,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 21:32:39,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:39,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:32:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:44,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:44,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-24 21:32:44,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:32:44,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:44,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:44,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:44,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:32:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:44,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:44,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 21:32:44,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731981511] [2020-09-24 21:32:44,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:44,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:44,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072046400] [2020-09-24 21:32:44,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:44,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:44,719 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand 9 states. [2020-09-24 21:32:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:44,900 INFO L93 Difference]: Finished difference Result 120 states and 171 transitions. [2020-09-24 21:32:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:44,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 21:32:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:44,904 INFO L225 Difference]: With dead ends: 120 [2020-09-24 21:32:44,904 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 21:32:44,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 21:32:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-24 21:32:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 21:32:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2020-09-24 21:32:44,921 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 69 [2020-09-24 21:32:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:44,921 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2020-09-24 21:32:44,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2020-09-24 21:32:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 21:32:44,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:44,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:32:44,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:44,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-24 21:32:44,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:44,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754956297] [2020-09-24 21:32:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-24 21:32:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 21:32:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:32:54,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:32:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:32:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:32:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:32:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3782 [2020-09-24 21:32:58,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:59,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:59,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:59,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:59,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:59,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:59,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:32:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1483 [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 21:33:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:33:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:33:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:33:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:00,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:00,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 34 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 21:33:00,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754956297] [2020-09-24 21:33:00,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:00,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 21:33:00,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922245370] [2020-09-24 21:33:00,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:33:00,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:33:00,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:33:00,944 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand 18 states. [2020-09-24 21:33:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:01,427 INFO L93 Difference]: Finished difference Result 177 states and 266 transitions. [2020-09-24 21:33:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:33:01,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 101 [2020-09-24 21:33:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:01,430 INFO L225 Difference]: With dead ends: 177 [2020-09-24 21:33:01,430 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 21:33:01,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:33:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 21:33:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2020-09-24 21:33:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 21:33:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-09-24 21:33:01,443 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 101 [2020-09-24 21:33:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:01,443 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-09-24 21:33:01,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:33:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-09-24 21:33:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 21:33:01,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:01,445 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:33:01,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:33:01,446 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:01,446 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 21:33:01,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:01,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506789152] [2020-09-24 21:33:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:06,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 21:33:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:33:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:33:06,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:33:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:33:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:06,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking...