/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:04:38,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:04:38,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:04:38,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:04:38,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:04:38,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:04:38,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:04:38,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:04:38,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:04:38,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:04:38,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:04:38,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:04:38,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:04:38,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:04:38,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:04:38,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:04:38,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:04:38,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:04:38,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:04:38,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:04:38,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:04:38,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:04:38,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:04:38,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:04:38,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:04:38,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:04:38,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:04:38,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:04:38,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:04:38,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:04:38,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:04:38,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:04:38,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:04:38,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:04:38,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:04:38,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:04:38,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:04:38,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:04:38,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:04:38,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:04:38,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:04:38,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:04:38,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:04:38,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:04:38,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:04:38,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:04:38,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:04:38,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:04:38,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:04:38,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:04:38,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:04:38,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:04:38,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:04:38,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:04:38,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:04:38,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:04:38,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:04:38,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:04:38,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:04:38,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:04:38,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:04:38,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:04:38,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:04:38,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:04:38,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:04:38,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:04:38,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:04:38,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:04:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:04:38,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:04:38,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:04:38,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:04:38,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:04:38,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:04:38,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:04:38,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:04:38,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:04:38,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2020-10-13 09:04:38,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/130527140/bc942c8e02d04691962bb8ba3da2686f/FLAGa97bec7a0 [2020-10-13 09:04:39,174 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:04:39,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2020-10-13 09:04:39,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/130527140/bc942c8e02d04691962bb8ba3da2686f/FLAGa97bec7a0 [2020-10-13 09:04:39,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/130527140/bc942c8e02d04691962bb8ba3da2686f [2020-10-13 09:04:39,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:04:39,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:04:39,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:39,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:04:39,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:04:39,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:39" (1/1) ... [2020-10-13 09:04:39,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:39, skipping insertion in model container [2020-10-13 09:04:39,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:39" (1/1) ... [2020-10-13 09:04:39,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:04:39,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:04:40,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:40,493 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:04:40,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:40,823 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:04:40,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40 WrapperNode [2020-10-13 09:04:40,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:40,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:04:40,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:04:40,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:04:40,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:41,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:41,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:04:41,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:04:41,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:04:41,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:04:41,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:04:41,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:04:41,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:04:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:04:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:04:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:04:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:04:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:04:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:04:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:04:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:04:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:04:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:04:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:04:46,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:04:46,634 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:04:46,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:46 BoogieIcfgContainer [2020-10-13 09:04:46,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:04:46,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:04:46,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:04:46,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:04:46,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:39" (1/3) ... [2020-10-13 09:04:46,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447eb98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:46, skipping insertion in model container [2020-10-13 09:04:46,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (2/3) ... [2020-10-13 09:04:46,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447eb98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:46, skipping insertion in model container [2020-10-13 09:04:46,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:46" (3/3) ... [2020-10-13 09:04:46,651 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label30.c [2020-10-13 09:04:46,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:04:46,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:04:46,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:04:46,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:04:46,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:04:46,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:04:46,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:04:46,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:04:46,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:04:46,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:04:46,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:04:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:04:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 09:04:46,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:46,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:46,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash -291184840, now seen corresponding path program 1 times [2020-10-13 09:04:46,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:46,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340430822] [2020-10-13 09:04:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 09:04:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-13 09:04:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:04:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:04:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:04:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:04:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:47,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:04:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:04:47,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340430822] [2020-10-13 09:04:47,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:04:47,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:04:47,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720947619] [2020-10-13 09:04:47,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:04:47,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:47,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:04:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:04:47,449 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:04:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:55,065 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 09:04:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:55,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-13 09:04:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:55,092 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 09:04:55,092 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 09:04:55,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 09:04:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 09:04:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:04:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 09:04:55,205 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 20 [2020-10-13 09:04:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:55,205 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 09:04:55,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:04:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 09:04:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 09:04:55,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:55,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2020-10-13 09:04:55,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:04:55,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash -829613321, now seen corresponding path program 1 times [2020-10-13 09:04:55,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:55,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513211155] [2020-10-13 09:04:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:04:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-13 09:04:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:04:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:04:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:04:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:04:56,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:04:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:04:56,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513211155] [2020-10-13 09:04:56,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:56,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:56,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608624231] [2020-10-13 09:04:56,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:56,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:56,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:56,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:56,432 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 09:05:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:01,618 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-13 09:05:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:01,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 09:05:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:01,626 INFO L225 Difference]: With dead ends: 1695 [2020-10-13 09:05:01,626 INFO L226 Difference]: Without dead ends: 1007 [2020-10-13 09:05:01,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-13 09:05:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-13 09:05:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-13 09:05:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-13 09:05:01,668 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 90 [2020-10-13 09:05:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:01,669 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-13 09:05:01,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-13 09:05:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 09:05:01,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:01,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:01,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:05:01,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash 880883385, now seen corresponding path program 1 times [2020-10-13 09:05:01,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:01,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904011607] [2020-10-13 09:05:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:02,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:05:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:02,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:02,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:05:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:05:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:05:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:02,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904011607] [2020-10-13 09:05:02,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:02,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:02,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549559025] [2020-10-13 09:05:02,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:02,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:02,697 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-13 09:05:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:10,580 INFO L93 Difference]: Finished difference Result 2017 states and 2942 transitions. [2020-10-13 09:05:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:10,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 09:05:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:10,588 INFO L225 Difference]: With dead ends: 2017 [2020-10-13 09:05:10,588 INFO L226 Difference]: Without dead ends: 1327 [2020-10-13 09:05:10,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-13 09:05:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2020-10-13 09:05:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-13 09:05:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1744 transitions. [2020-10-13 09:05:10,624 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1744 transitions. Word has length 103 [2020-10-13 09:05:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:10,625 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1744 transitions. [2020-10-13 09:05:10,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1744 transitions. [2020-10-13 09:05:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 09:05:10,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:10,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:10,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:05:10,629 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1614681932, now seen corresponding path program 1 times [2020-10-13 09:05:10,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:10,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519343492] [2020-10-13 09:05:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 09:05:11,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-10-13 09:05:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:05:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:12,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519343492] [2020-10-13 09:05:12,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:12,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:12,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707029288] [2020-10-13 09:05:12,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:12,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:12,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:12,083 INFO L87 Difference]: Start difference. First operand 1327 states and 1744 transitions. Second operand 5 states. [2020-10-13 09:05:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:18,737 INFO L93 Difference]: Finished difference Result 3270 states and 4442 transitions. [2020-10-13 09:05:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:18,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 09:05:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:18,767 INFO L225 Difference]: With dead ends: 3270 [2020-10-13 09:05:18,768 INFO L226 Difference]: Without dead ends: 2258 [2020-10-13 09:05:18,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-10-13 09:05:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2256. [2020-10-13 09:05:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-10-13 09:05:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2774 transitions. [2020-10-13 09:05:18,833 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2774 transitions. Word has length 136 [2020-10-13 09:05:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:18,834 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 2774 transitions. [2020-10-13 09:05:18,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2774 transitions. [2020-10-13 09:05:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 09:05:18,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:18,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:18,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:05:18,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:18,846 INFO L82 PathProgramCache]: Analyzing trace with hash -990845610, now seen corresponding path program 1 times [2020-10-13 09:05:18,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:18,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989474166] [2020-10-13 09:05:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:18,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:05:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-13 09:05:19,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:05:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:05:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:19,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:05:20,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:05:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:05:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:20,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989474166] [2020-10-13 09:05:20,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:20,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:20,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700828750] [2020-10-13 09:05:20,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:20,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:20,234 INFO L87 Difference]: Start difference. First operand 2256 states and 2774 transitions. Second operand 5 states. [2020-10-13 09:05:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:27,237 INFO L93 Difference]: Finished difference Result 5462 states and 6943 transitions. [2020-10-13 09:05:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:27,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 09:05:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:27,254 INFO L225 Difference]: With dead ends: 5462 [2020-10-13 09:05:27,255 INFO L226 Difference]: Without dead ends: 3521 [2020-10-13 09:05:27,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-10-13 09:05:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3514. [2020-10-13 09:05:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2020-10-13 09:05:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 4280 transitions. [2020-10-13 09:05:27,337 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 4280 transitions. Word has length 143 [2020-10-13 09:05:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:27,338 INFO L479 AbstractCegarLoop]: Abstraction has 3514 states and 4280 transitions. [2020-10-13 09:05:27,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 4280 transitions. [2020-10-13 09:05:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 09:05:27,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:27,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2020-10-13 09:05:27,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:05:27,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:27,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:27,341 INFO L82 PathProgramCache]: Analyzing trace with hash -694942431, now seen corresponding path program 1 times [2020-10-13 09:05:27,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:27,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305070098] [2020-10-13 09:05:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 09:05:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-13 09:05:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 09:05:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:28,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:28,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:05:28,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:28,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:28,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:05:28,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:05:28,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:05:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:28,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305070098] [2020-10-13 09:05:28,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:28,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:28,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141633301] [2020-10-13 09:05:28,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:28,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:28,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:28,516 INFO L87 Difference]: Start difference. First operand 3514 states and 4280 transitions. Second operand 5 states. [2020-10-13 09:05:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:36,722 INFO L93 Difference]: Finished difference Result 7962 states and 9971 transitions. [2020-10-13 09:05:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:36,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 09:05:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:36,745 INFO L225 Difference]: With dead ends: 7962 [2020-10-13 09:05:36,745 INFO L226 Difference]: Without dead ends: 4763 [2020-10-13 09:05:36,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2020-10-13 09:05:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4760. [2020-10-13 09:05:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4760 states. [2020-10-13 09:05:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 5765 transitions. [2020-10-13 09:05:36,852 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 5765 transitions. Word has length 149 [2020-10-13 09:05:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:36,852 INFO L479 AbstractCegarLoop]: Abstraction has 4760 states and 5765 transitions. [2020-10-13 09:05:36,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 5765 transitions. [2020-10-13 09:05:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 09:05:36,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:36,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1] [2020-10-13 09:05:36,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:05:36,856 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:36,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:36,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1406812891, now seen corresponding path program 1 times [2020-10-13 09:05:36,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:36,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101545316] [2020-10-13 09:05:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 09:05:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-13 09:05:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 09:05:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:38,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:38,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:38,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:38,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:38,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:05:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 09:05:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:05:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:38,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101545316] [2020-10-13 09:05:38,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:38,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:38,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970376294] [2020-10-13 09:05:38,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:38,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:38,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:38,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:38,408 INFO L87 Difference]: Start difference. First operand 4760 states and 5765 transitions. Second operand 5 states. [2020-10-13 09:05:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:47,842 INFO L93 Difference]: Finished difference Result 11088 states and 13755 transitions. [2020-10-13 09:05:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:47,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 09:05:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:47,874 INFO L225 Difference]: With dead ends: 11088 [2020-10-13 09:05:47,874 INFO L226 Difference]: Without dead ends: 6643 [2020-10-13 09:05:47,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2020-10-13 09:05:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 6629. [2020-10-13 09:05:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6629 states. [2020-10-13 09:05:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 8208 transitions. [2020-10-13 09:05:48,047 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 8208 transitions. Word has length 163 [2020-10-13 09:05:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:48,048 INFO L479 AbstractCegarLoop]: Abstraction has 6629 states and 8208 transitions. [2020-10-13 09:05:48,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 8208 transitions. [2020-10-13 09:05:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 09:05:48,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:48,052 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:05:48,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:05:48,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash 219564836, now seen corresponding path program 1 times [2020-10-13 09:05:48,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:48,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651491400] [2020-10-13 09:05:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:53,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:05:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:05:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 09:05:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:53,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:05:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:05:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:05:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:53,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:53,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:05:53,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:05:53,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:53,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:05:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:05:53,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651491400] [2020-10-13 09:05:53,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:53,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:53,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228000540] [2020-10-13 09:05:53,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:53,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:53,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:53,375 INFO L87 Difference]: Start difference. First operand 6629 states and 8208 transitions. Second operand 5 states. [2020-10-13 09:06:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:05,898 INFO L93 Difference]: Finished difference Result 16724 states and 21327 transitions. [2020-10-13 09:06:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:05,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-13 09:06:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:05,946 INFO L225 Difference]: With dead ends: 16724 [2020-10-13 09:06:05,947 INFO L226 Difference]: Without dead ends: 10410 [2020-10-13 09:06:05,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10410 states. [2020-10-13 09:06:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10410 to 10404. [2020-10-13 09:06:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10404 states. [2020-10-13 09:06:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 13162 transitions. [2020-10-13 09:06:06,236 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 13162 transitions. Word has length 183 [2020-10-13 09:06:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:06,237 INFO L479 AbstractCegarLoop]: Abstraction has 10404 states and 13162 transitions. [2020-10-13 09:06:06,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 13162 transitions. [2020-10-13 09:06:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 09:06:06,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:06,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:06,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:06:06,243 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:06,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1578729165, now seen corresponding path program 1 times [2020-10-13 09:06:06,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:06,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337767361] [2020-10-13 09:06:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:11,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:11,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:06:11,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:06:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:06:11,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:06:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:06:11,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:11,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:11,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:11,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:11,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:11,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:06:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:06:11,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:06:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:06:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:06:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:06:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:06:11,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337767361] [2020-10-13 09:06:11,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:11,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:11,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874929699] [2020-10-13 09:06:11,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:11,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:11,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:11,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:11,674 INFO L87 Difference]: Start difference. First operand 10404 states and 13162 transitions. Second operand 5 states. [2020-10-13 09:06:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:20,359 INFO L93 Difference]: Finished difference Result 22966 states and 29959 transitions. [2020-10-13 09:06:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:20,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-13 09:06:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:20,405 INFO L225 Difference]: With dead ends: 22966 [2020-10-13 09:06:20,405 INFO L226 Difference]: Without dead ends: 12877 [2020-10-13 09:06:20,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12877 states. [2020-10-13 09:06:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12877 to 12877. [2020-10-13 09:06:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12877 states. [2020-10-13 09:06:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12877 states to 12877 states and 16336 transitions. [2020-10-13 09:06:20,767 INFO L78 Accepts]: Start accepts. Automaton has 12877 states and 16336 transitions. Word has length 202 [2020-10-13 09:06:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:20,768 INFO L479 AbstractCegarLoop]: Abstraction has 12877 states and 16336 transitions. [2020-10-13 09:06:20,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 12877 states and 16336 transitions. [2020-10-13 09:06:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 09:06:20,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:20,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2020-10-13 09:06:20,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:06:20,777 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1986084835, now seen corresponding path program 1 times [2020-10-13 09:06:20,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:20,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279176375] [2020-10-13 09:06:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:22,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1764 [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 09:06:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:06:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:22,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:22,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:06:22,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 09:06:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 09:06:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:23,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279176375] [2020-10-13 09:06:23,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:23,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:23,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79459952] [2020-10-13 09:06:23,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:23,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:23,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:23,083 INFO L87 Difference]: Start difference. First operand 12877 states and 16336 transitions. Second operand 5 states. [2020-10-13 09:06:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:31,878 INFO L93 Difference]: Finished difference Result 25448 states and 32364 transitions. [2020-10-13 09:06:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:31,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 09:06:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:31,933 INFO L225 Difference]: With dead ends: 25448 [2020-10-13 09:06:31,933 INFO L226 Difference]: Without dead ends: 12877 [2020-10-13 09:06:31,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12877 states. [2020-10-13 09:06:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12877 to 12877. [2020-10-13 09:06:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12877 states. [2020-10-13 09:06:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12877 states to 12877 states and 16314 transitions. [2020-10-13 09:06:32,272 INFO L78 Accepts]: Start accepts. Automaton has 12877 states and 16314 transitions. Word has length 205 [2020-10-13 09:06:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:32,273 INFO L479 AbstractCegarLoop]: Abstraction has 12877 states and 16314 transitions. [2020-10-13 09:06:32,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12877 states and 16314 transitions. [2020-10-13 09:06:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 09:06:32,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:32,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1] [2020-10-13 09:06:32,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:06:32,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2120068937, now seen corresponding path program 1 times [2020-10-13 09:06:32,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:32,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623457453] [2020-10-13 09:06:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:34,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:34,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 09:06:34,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:34,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-13 09:06:34,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:34,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:06:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:06:34,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:34,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:34,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:34,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:34,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:34,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:34,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:06:34,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:06:34,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:06:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 09:06:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:34,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:34,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:06:34,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:06:34,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:06:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:06:34,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:06:34,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623457453] [2020-10-13 09:06:34,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:34,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:06:34,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294983705] [2020-10-13 09:06:34,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:06:34,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:34,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:06:34,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:34,645 INFO L87 Difference]: Start difference. First operand 12877 states and 16314 transitions. Second operand 7 states. [2020-10-13 09:06:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:45,902 INFO L93 Difference]: Finished difference Result 27015 states and 35865 transitions. [2020-10-13 09:06:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:06:45,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-13 09:06:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:45,966 INFO L225 Difference]: With dead ends: 27015 [2020-10-13 09:06:45,966 INFO L226 Difference]: Without dead ends: 14453 [2020-10-13 09:06:45,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:06:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14453 states. [2020-10-13 09:06:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14453 to 14256. [2020-10-13 09:06:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14256 states. [2020-10-13 09:06:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 18270 transitions. [2020-10-13 09:06:46,293 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 18270 transitions. Word has length 219 [2020-10-13 09:06:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:46,294 INFO L479 AbstractCegarLoop]: Abstraction has 14256 states and 18270 transitions. [2020-10-13 09:06:46,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:06:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 18270 transitions. [2020-10-13 09:06:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 09:06:46,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:46,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 09:06:46,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:06:46,304 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1854184478, now seen corresponding path program 1 times [2020-10-13 09:06:46,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:46,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222863120] [2020-10-13 09:06:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-13 09:06:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:06:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:50,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:06:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:50,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 09:06:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:06:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:06:50,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222863120] [2020-10-13 09:06:50,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:06:50,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:06:50,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513063940] [2020-10-13 09:06:50,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:50,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:50,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:50,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:50,621 INFO L87 Difference]: Start difference. First operand 14256 states and 18270 transitions. Second operand 5 states. [2020-10-13 09:07:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:01,223 INFO L93 Difference]: Finished difference Result 32531 states and 42535 transitions. [2020-10-13 09:07:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:01,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 09:07:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:01,289 INFO L225 Difference]: With dead ends: 32531 [2020-10-13 09:07:01,289 INFO L226 Difference]: Without dead ends: 18590 [2020-10-13 09:07:01,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18590 states. [2020-10-13 09:07:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18590 to 17975. [2020-10-13 09:07:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17975 states. [2020-10-13 09:07:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 23383 transitions. [2020-10-13 09:07:01,708 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 23383 transitions. Word has length 224 [2020-10-13 09:07:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:01,709 INFO L479 AbstractCegarLoop]: Abstraction has 17975 states and 23383 transitions. [2020-10-13 09:07:01,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 23383 transitions. [2020-10-13 09:07:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-13 09:07:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:01,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:01,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:07:01,718 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1429712744, now seen corresponding path program 1 times [2020-10-13 09:07:01,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:01,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364730411] [2020-10-13 09:07:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 09:07:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:07:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,166 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-13 09:07:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:07:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-13 09:07:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:07:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:07:03,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364730411] [2020-10-13 09:07:03,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:03,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:07:03,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003258872] [2020-10-13 09:07:03,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:07:03,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:03,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:07:03,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:03,635 INFO L87 Difference]: Start difference. First operand 17975 states and 23383 transitions. Second operand 6 states. [2020-10-13 09:07:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:10,570 INFO L93 Difference]: Finished difference Result 35678 states and 46542 transitions. [2020-10-13 09:07:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:07:10,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-13 09:07:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:10,616 INFO L225 Difference]: With dead ends: 35678 [2020-10-13 09:07:10,617 INFO L226 Difference]: Without dead ends: 17995 [2020-10-13 09:07:10,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:07:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17995 states. [2020-10-13 09:07:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 17975. [2020-10-13 09:07:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17975 states. [2020-10-13 09:07:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 23343 transitions. [2020-10-13 09:07:11,097 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 23343 transitions. Word has length 239 [2020-10-13 09:07:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:11,097 INFO L479 AbstractCegarLoop]: Abstraction has 17975 states and 23343 transitions. [2020-10-13 09:07:11,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:07:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 23343 transitions. [2020-10-13 09:07:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 09:07:11,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:11,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 09:07:11,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:07:11,104 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:11,105 INFO L82 PathProgramCache]: Analyzing trace with hash 665621845, now seen corresponding path program 1 times [2020-10-13 09:07:11,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:11,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974754373] [2020-10-13 09:07:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:11,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:13,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 09:07:13,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-13 09:07:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 09:07:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:07:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:13,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:13,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:07:13,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:07:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:07:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:07:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 09:07:13,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974754373] [2020-10-13 09:07:13,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:13,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502302924] [2020-10-13 09:07:13,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:13,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:13,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:13,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:13,718 INFO L87 Difference]: Start difference. First operand 17975 states and 23343 transitions. Second operand 5 states. [2020-10-13 09:07:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:22,408 INFO L93 Difference]: Finished difference Result 43361 states and 57693 transitions. [2020-10-13 09:07:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:22,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-13 09:07:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:22,499 INFO L225 Difference]: With dead ends: 43361 [2020-10-13 09:07:22,499 INFO L226 Difference]: Without dead ends: 25699 [2020-10-13 09:07:22,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25699 states. [2020-10-13 09:07:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25699 to 25385. [2020-10-13 09:07:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25385 states. [2020-10-13 09:07:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25385 states to 25385 states and 31926 transitions. [2020-10-13 09:07:23,115 INFO L78 Accepts]: Start accepts. Automaton has 25385 states and 31926 transitions. Word has length 242 [2020-10-13 09:07:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:23,116 INFO L479 AbstractCegarLoop]: Abstraction has 25385 states and 31926 transitions. [2020-10-13 09:07:23,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 25385 states and 31926 transitions. [2020-10-13 09:07:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-13 09:07:23,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:23,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:23,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:07:23,130 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:23,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1152707474, now seen corresponding path program 1 times [2020-10-13 09:07:23,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:23,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632412773] [2020-10-13 09:07:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2625 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-13 09:07:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:07:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:25,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:07:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 09:07:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:26,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:07:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 09:07:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:26,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:26,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:07:26,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:07:26,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:07:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 09:07:26,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632412773] [2020-10-13 09:07:26,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:26,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:07:26,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015771756] [2020-10-13 09:07:26,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:07:26,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:26,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:07:26,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:26,336 INFO L87 Difference]: Start difference. First operand 25385 states and 31926 transitions. Second operand 7 states. [2020-10-13 09:07:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:42,318 INFO L93 Difference]: Finished difference Result 52433 states and 66502 transitions. [2020-10-13 09:07:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:07:42,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-13 09:07:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:42,385 INFO L225 Difference]: With dead ends: 52433 [2020-10-13 09:07:42,385 INFO L226 Difference]: Without dead ends: 27361 [2020-10-13 09:07:42,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:07:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2020-10-13 09:07:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 27342. [2020-10-13 09:07:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27342 states. [2020-10-13 09:07:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27342 states to 27342 states and 34619 transitions. [2020-10-13 09:07:42,853 INFO L78 Accepts]: Start accepts. Automaton has 27342 states and 34619 transitions. Word has length 292 [2020-10-13 09:07:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:42,854 INFO L479 AbstractCegarLoop]: Abstraction has 27342 states and 34619 transitions. [2020-10-13 09:07:42,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:07:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 27342 states and 34619 transitions. [2020-10-13 09:07:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 09:07:42,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:42,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:42,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:07:42,864 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1125371832, now seen corresponding path program 1 times [2020-10-13 09:07:42,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:42,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015724996] [2020-10-13 09:07:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:07:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 09:07:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:07:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-13 09:07:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:07:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:07:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:07:45,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015724996] [2020-10-13 09:07:45,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:45,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:07:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370505762] [2020-10-13 09:07:45,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:07:45,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:07:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:45,241 INFO L87 Difference]: Start difference. First operand 27342 states and 34619 transitions. Second operand 7 states. [2020-10-13 09:08:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:04,671 INFO L93 Difference]: Finished difference Result 63277 states and 86795 transitions. [2020-10-13 09:08:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:08:04,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-13 09:08:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:04,801 INFO L225 Difference]: With dead ends: 63277 [2020-10-13 09:08:04,801 INFO L226 Difference]: Without dead ends: 36248 [2020-10-13 09:08:04,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:08:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36248 states. [2020-10-13 09:08:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36248 to 35461. [2020-10-13 09:08:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35461 states. [2020-10-13 09:08:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35461 states to 35461 states and 44542 transitions. [2020-10-13 09:08:05,532 INFO L78 Accepts]: Start accepts. Automaton has 35461 states and 44542 transitions. Word has length 298 [2020-10-13 09:08:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:05,533 INFO L479 AbstractCegarLoop]: Abstraction has 35461 states and 44542 transitions. [2020-10-13 09:08:05,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:08:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 35461 states and 44542 transitions. [2020-10-13 09:08:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 09:08:05,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:05,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:08:05,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:08:05,549 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1587234532, now seen corresponding path program 1 times [2020-10-13 09:08:05,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:05,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33151479] [2020-10-13 09:08:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1867 [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 09:08:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:08:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:07,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:07,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-13 09:08:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-13 09:08:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:07,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:08:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:08:07,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:08:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:08:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:08:08,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33151479] [2020-10-13 09:08:08,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:08,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:08:08,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928764990] [2020-10-13 09:08:08,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:08:08,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:08,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:08:08,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:08:08,032 INFO L87 Difference]: Start difference. First operand 35461 states and 44542 transitions. Second operand 7 states. [2020-10-13 09:08:10,670 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-13 09:08:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:24,465 INFO L93 Difference]: Finished difference Result 72188 states and 91326 transitions. [2020-10-13 09:08:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:08:24,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-13 09:08:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:24,565 INFO L225 Difference]: With dead ends: 72188 [2020-10-13 09:08:24,565 INFO L226 Difference]: Without dead ends: 37040 [2020-10-13 09:08:24,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:08:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37040 states. [2020-10-13 09:08:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37040 to 36716. [2020-10-13 09:08:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36716 states. [2020-10-13 09:08:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36716 states to 36716 states and 45824 transitions. [2020-10-13 09:08:25,221 INFO L78 Accepts]: Start accepts. Automaton has 36716 states and 45824 transitions. Word has length 310 [2020-10-13 09:08:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:25,222 INFO L479 AbstractCegarLoop]: Abstraction has 36716 states and 45824 transitions. [2020-10-13 09:08:25,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:08:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 36716 states and 45824 transitions. [2020-10-13 09:08:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 09:08:25,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:25,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1] [2020-10-13 09:08:25,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:08:25,235 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1288169549, now seen corresponding path program 1 times [2020-10-13 09:08:25,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:25,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854796368] [2020-10-13 09:08:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3205 [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 09:08:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:08:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:08:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:08:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 09:08:28,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854796368] [2020-10-13 09:08:28,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:28,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:28,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943136996] [2020-10-13 09:08:28,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:28,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:28,845 INFO L87 Difference]: Start difference. First operand 36716 states and 45824 transitions. Second operand 5 states.