/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=HIGHLEXORDER --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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:39:39,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:39:39,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:39:39,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:39:39,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:39:39,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:39:39,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:39:39,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:39:39,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:39:39,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:39:39,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:39:39,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:39:39,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:39:39,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:39:39,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:39:39,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:39:39,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:39:39,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:39:39,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:39:39,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:39:39,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:39:39,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:39:39,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:39:39,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:39:39,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:39:39,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:39:39,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:39:39,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:39:39,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:39:39,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:39:39,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:39:39,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:39:39,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:39:39,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:39:39,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:39:39,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:39:39,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:39:39,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:39:39,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:39:39,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:39:39,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:39:39,136 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 22:39:39,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:39:39,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:39:39,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:39:39,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:39:39,162 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:39:39,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:39:39,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:39:39,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:39:39,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:39:39,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:39:39,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:39:39,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:39:39,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:39:39,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:39:39,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:39:39,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:39:39,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:39:39,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:39:39,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:39:39,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:39:39,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:39:39,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:39:39,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:39:39,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:39:39,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:39:39,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:39:39,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:39:39,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:39:39,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:39:39,167 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:39:39,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:39:39,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:39:39,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:39:39,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:39:39,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:39:39,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-24 22:39:39,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1f3ab98/cd38253f08f8449faab99cf6aa8e2510/FLAG1982c2a14 [2020-09-24 22:39:40,329 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:39:40,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-24 22:39:40,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1f3ab98/cd38253f08f8449faab99cf6aa8e2510/FLAG1982c2a14 [2020-09-24 22:39:40,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1f3ab98/cd38253f08f8449faab99cf6aa8e2510 [2020-09-24 22:39:40,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:39:40,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:39:40,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:40,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:39:40,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:39:40,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:40" (1/1) ... [2020-09-24 22:39:40,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:40, skipping insertion in model container [2020-09-24 22:39:40,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:40" (1/1) ... [2020-09-24 22:39:40,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:39:40,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:39:40,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:40,969 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:39:40,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:41,004 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:39:41,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41 WrapperNode [2020-09-24 22:39:41,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:41,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:39:41,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:39:41,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:39:41,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (1/1) ... [2020-09-24 22:39:41,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:39:41,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:39:41,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:39:41,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:39:41,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (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 22:39:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:39:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:39:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:39:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:39:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:39:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:39:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:39:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:39:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:39:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:39:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:39:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:39:41,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:39:41,531 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:39:41,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:41 BoogieIcfgContainer [2020-09-24 22:39:41,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:39:41,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:39:41,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:39:41,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:39:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:39:40" (1/3) ... [2020-09-24 22:39:41,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:41, skipping insertion in model container [2020-09-24 22:39:41,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:41" (2/3) ... [2020-09-24 22:39:41,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:41, skipping insertion in model container [2020-09-24 22:39:41,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:41" (3/3) ... [2020-09-24 22:39:41,545 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-2.c [2020-09-24 22:39:41,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:39:41,567 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:39:41,589 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:39:41,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:39:41,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:39:41,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:39:41,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:39:41,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:39:41,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:39:41,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:39:41,618 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:39:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:39:41,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:39:41,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:41,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:41,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:39:41,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:41,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160288658] [2020-09-24 22:39:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:39:41,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 22:39:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:39:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:39:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:41,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:42,015 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 22:39:42,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160288658] [2020-09-24 22:39:42,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:42,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:42,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46039912] [2020-09-24 22:39:42,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:42,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:42,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:42,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:42,043 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:39:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:42,199 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:39:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:42,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:39:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:42,215 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:39:42,216 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:39:42,219 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 22:39:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:39:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:39:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:42,275 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:39:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:42,276 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:42,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:39:42,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:42,279 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 22:39:42,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:39:42,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:42,280 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:39:42,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:42,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123591253] [2020-09-24 22:39:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:39:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 22:39:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:42,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:42,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:42,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:42,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:42,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:42,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:39:42,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:42,493 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 22:39:42,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123591253] [2020-09-24 22:39:42,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:42,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:42,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506352600] [2020-09-24 22:39:42,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:42,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:42,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:42,498 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:39:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:42,582 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:39:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:42,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:39:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:42,585 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:39:42,586 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:39:42,587 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 22:39:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:39:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:39:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:42,598 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:39:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:42,598 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:42,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:39:42,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:42,601 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 22:39:42,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:39:42,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:39:42,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:42,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878381644] [2020-09-24 22:39:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:43,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-24 22:39:43,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:39:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:43,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 22:39:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:43,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:43,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,443 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 22:39:43,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878381644] [2020-09-24 22:39:43,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:43,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:43,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571716283] [2020-09-24 22:39:43,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:43,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:43,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:43,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:43,446 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 22:39:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:43,527 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:43,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:39:43,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:43,529 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:43,529 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:43,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:43,541 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:43,542 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:43,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:43,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:43,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:43,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:43,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:43,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:43,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690902911] [2020-09-24 22:39:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 22:39:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:43,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-24 22:39:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:44,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:44,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:39:44,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:44,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690902911] [2020-09-24 22:39:44,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:44,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:39:44,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721800997] [2020-09-24 22:39:44,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:44,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:44,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:44,409 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 22:39:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:44,534 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 22:39:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:44,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:39:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:44,537 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:39:44,537 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:39:44,537 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 22:39:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:39:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 22:39:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 22:39:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 22:39:44,547 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 22:39:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:44,548 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 22:39:44,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 22:39:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:44,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:44,550 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 22:39:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:44,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:44,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:44,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523403145] [2020-09-24 22:39:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-24 22:39:45,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:45,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 22:39:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:45,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 22:39:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:45,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523403145] [2020-09-24 22:39:45,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:45,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:45,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239028577] [2020-09-24 22:39:45,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:45,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:45,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:45,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:45,305 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2020-09-24 22:39:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:45,375 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2020-09-24 22:39:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:45,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:39:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:45,378 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:39:45,378 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 22:39:45,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 22:39:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 22:39:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-24 22:39:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-24 22:39:45,393 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 35 [2020-09-24 22:39:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:45,393 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-24 22:39:45,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-24 22:39:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:45,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:45,396 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 22:39:45,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:45,397 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-24 22:39:45,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:45,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549455971] [2020-09-24 22:39:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4223 [2020-09-24 22:39:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:39:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:49,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:49,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 22:39:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:39:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:50,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:50,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 22:39:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:50,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:50,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549455971] [2020-09-24 22:39:50,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:50,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:50,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292299646] [2020-09-24 22:39:50,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:50,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:50,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:50,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:50,212 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-09-24 22:39:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:50,301 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:50,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 22:39:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:50,303 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:50,303 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:50,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-24 22:39:50,314 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-24 22:39:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:50,314 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-24 22:39:50,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-24 22:39:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:50,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:50,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-09-24 22:39:50,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:50,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:50,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:50,317 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 1 times [2020-09-24 22:39:50,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:50,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564966820] [2020-09-24 22:39:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-09-24 22:39:53,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 22:39:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:53,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 22:39:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 22:39:53,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:39:53,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564966820] [2020-09-24 22:39:53,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:53,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:53,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307293844] [2020-09-24 22:39:53,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:53,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:53,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:53,869 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-24 22:39:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:54,100 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2020-09-24 22:39:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:54,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:39:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:54,102 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:39:54,102 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 22:39:54,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 22:39:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-24 22:39:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:39:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-09-24 22:39:54,117 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 52 [2020-09-24 22:39:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:54,118 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-09-24 22:39:54,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-09-24 22:39:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:54,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:54,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-09-24 22:39:54,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:54,121 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 2 times [2020-09-24 22:39:54,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:54,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252870488] [2020-09-24 22:39:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-09-24 22:39:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:55,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:55,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-09-24 22:39:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:57,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:39:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:57,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:57,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:39:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 22:39:57,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252870488] [2020-09-24 22:39:57,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:57,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:57,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578588638] [2020-09-24 22:39:57,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:57,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:57,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:57,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:57,600 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-09-24 22:39:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:57,711 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2020-09-24 22:39:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:57,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:39:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:57,714 INFO L225 Difference]: With dead ends: 86 [2020-09-24 22:39:57,714 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:39:57,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 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 22:39:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:39:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-24 22:39:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-09-24 22:39:57,725 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 52 [2020-09-24 22:39:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:57,725 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-09-24 22:39:57,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-09-24 22:39:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:57,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:57,727 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 22:39:57,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:57,728 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 22:39:57,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:57,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718445964] [2020-09-24 22:39:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:40:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:40:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 22:40:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:40:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:02,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:02,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:02,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:07,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:40:07,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:40:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:40:07,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:40:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:07,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:07,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:08,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:08,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:08,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:40:08,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:08,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:08,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:40:08,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718445964] [2020-09-24 22:40:08,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:08,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:40:08,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464378355] [2020-09-24 22:40:08,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:40:08,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:08,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:40:08,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:08,375 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 11 states. [2020-09-24 22:40:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:08,669 INFO L93 Difference]: Finished difference Result 160 states and 234 transitions. [2020-09-24 22:40:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:40:08,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-24 22:40:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:08,671 INFO L225 Difference]: With dead ends: 160 [2020-09-24 22:40:08,671 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 22:40:08,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:40:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 22:40:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2020-09-24 22:40:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 22:40:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-09-24 22:40:08,681 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 69 [2020-09-24 22:40:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:08,681 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-09-24 22:40:08,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:40:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-09-24 22:40:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 22:40:08,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:08,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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 22:40:08,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:40:08,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-24 22:40:08,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:08,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485140565] [2020-09-24 22:40:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:40:13,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:40:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:40:13,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 22:40:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 22:40:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:40:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:40:18,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 22:40:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:18,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:18,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:40:18,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:18,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:18,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:40:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:18,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:40:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:40:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 22:40:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:40:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:40:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 22:40:19,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485140565] [2020-09-24 22:40:19,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:19,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:40:19,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909066296] [2020-09-24 22:40:19,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:40:19,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:19,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:40:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:40:19,095 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 10 states. [2020-09-24 22:40:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:19,231 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2020-09-24 22:40:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:40:19,232 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-24 22:40:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:19,233 INFO L225 Difference]: With dead ends: 137 [2020-09-24 22:40:19,233 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 22:40:19,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:40:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 22:40:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-24 22:40:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 22:40:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-09-24 22:40:19,241 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 71 [2020-09-24 22:40:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:19,241 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-09-24 22:40:19,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:40:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-09-24 22:40:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 22:40:19,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:19,243 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:19,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:40:19,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:19,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2033462690, now seen corresponding path program 1 times [2020-09-24 22:40:19,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:19,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902245533] [2020-09-24 22:40:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:24,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 22:40:24,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:40:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:40:24,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:40:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:24,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:24,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 22:40:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 22:40:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:40:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:40:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:40:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:40:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:40:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3243 [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 22:40:34,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:34,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:40:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:34,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:34,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:34,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 22:40:34,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902245533] [2020-09-24 22:40:34,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:34,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:40:34,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426268644] [2020-09-24 22:40:34,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:40:34,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:34,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:40:34,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:40:34,539 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 13 states. [2020-09-24 22:40:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:35,121 INFO L93 Difference]: Finished difference Result 201 states and 302 transitions. [2020-09-24 22:40:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:40:35,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 104 [2020-09-24 22:40:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:35,125 INFO L225 Difference]: With dead ends: 201 [2020-09-24 22:40:35,125 INFO L226 Difference]: Without dead ends: 131 [2020-09-24 22:40:35,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:40:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-24 22:40:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2020-09-24 22:40:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 22:40:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-09-24 22:40:35,150 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 104 [2020-09-24 22:40:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-09-24 22:40:35,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:40:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-09-24 22:40:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:40:35,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:35,155 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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] [2020-09-24 22:40:35,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:40:35,155 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:35,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 22:40:35,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:35,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655632385] [2020-09-24 22:40:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking...