/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/Problem13_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:36:40,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:36:41,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:36:41,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:36:41,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:36:41,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:36:41,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:36:41,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:36:41,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:36:41,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:36:41,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:36:41,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:36:41,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:36:41,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:36:41,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:36:41,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:36:41,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:36:41,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:36:41,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:36:41,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:36:41,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:36:41,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:36:41,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:36:41,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:36:41,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:36:41,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:36:41,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:36:41,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:36:41,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:36:41,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:36:41,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:36:41,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:36:41,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:36:41,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:36:41,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:36:41,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:36:41,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:36:41,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:36:41,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:36:41,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:36:41,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:36:41,164 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 08:36:41,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:36:41,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:36:41,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:36:41,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:36:41,199 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:36:41,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:36:41,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:36:41,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:36:41,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:36:41,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:36:41,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:36:41,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:36:41,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:36:41,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:36:41,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:36:41,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:36:41,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:36:41,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:36:41,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:36:41,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:36:41,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:36:41,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:36:41,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:36:41,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:36:41,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:36:41,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:36:41,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:36:41,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:36:41,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:36:41,205 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 08:36:41,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:36:41,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:36:41,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:36:41,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:36:41,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:36:41,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-13 08:36:41,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488196e5f/d15c5db988d44f7c8b8fa7d58d09df48/FLAG8d62d3aba [2020-10-13 08:36:42,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:36:42,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-13 08:36:42,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488196e5f/d15c5db988d44f7c8b8fa7d58d09df48/FLAG8d62d3aba [2020-10-13 08:36:43,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488196e5f/d15c5db988d44f7c8b8fa7d58d09df48 [2020-10-13 08:36:43,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:36:43,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:36:43,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:36:43,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:36:43,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:36:43,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:36:43" (1/1) ... [2020-10-13 08:36:43,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:43, skipping insertion in model container [2020-10-13 08:36:43,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:36:43" (1/1) ... [2020-10-13 08:36:43,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:36:43,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:36:45,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:36:45,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:36:46,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:36:46,255 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:36:46,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46 WrapperNode [2020-10-13 08:36:46,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:36:46,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:36:46,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:36:46,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:36:46,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (1/1) ... [2020-10-13 08:36:46,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:36:46,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:36:46,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:36:46,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:36:46,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (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 08:36:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:36:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:36:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:36:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:36:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:36:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:36:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:36:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:36:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:36:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:36:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:36:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:36:58,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:36:58,697 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:36:58,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:36:58 BoogieIcfgContainer [2020-10-13 08:36:58,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:36:58,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:36:58,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:36:58,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:36:58,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:36:43" (1/3) ... [2020-10-13 08:36:58,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a59dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:36:58, skipping insertion in model container [2020-10-13 08:36:58,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:36:46" (2/3) ... [2020-10-13 08:36:58,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a59dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:36:58, skipping insertion in model container [2020-10-13 08:36:58,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:36:58" (3/3) ... [2020-10-13 08:36:58,720 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label29.c [2020-10-13 08:36:58,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:36:58,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:36:58,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:36:58,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:36:58,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:36:58,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:36:58,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:36:58,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:36:58,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:36:58,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:36:58,788 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:36:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:36:58,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 08:36:58,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:58,835 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 08:36:58,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1603055809, now seen corresponding path program 1 times [2020-10-13 08:36:58,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:58,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654106203] [2020-10-13 08:36:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:59,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 08:36:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-13 08:36:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:36:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:36:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:36:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:36:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:59,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:59,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:36:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:36:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:59,547 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 08:36:59,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654106203] [2020-10-13 08:36:59,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:36:59,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:36:59,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293931778] [2020-10-13 08:36:59,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:36:59,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:59,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:36:59,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:36:59,576 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:37:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:16,897 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-13 08:37:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:16,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-13 08:37:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:16,937 INFO L225 Difference]: With dead ends: 3152 [2020-10-13 08:37:16,938 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 08:37:16,960 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 08:37:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 08:37:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-13 08:37:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 08:37:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-13 08:37:17,192 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 20 [2020-10-13 08:37:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:17,194 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-13 08:37:17,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:37:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-13 08:37:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 08:37:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:17,208 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 08:37:17,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:37:17,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:17,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1222934038, now seen corresponding path program 1 times [2020-10-13 08:37:17,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:17,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623539838] [2020-10-13 08:37:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:18,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:37:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-13 08:37:18,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:18,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:18,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:37:18,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:37:18,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:37:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:18,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:18,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:37:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:18,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:37:18,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:37:18,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:37:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:18,653 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 08:37:18,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623539838] [2020-10-13 08:37:18,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:18,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:18,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118587837] [2020-10-13 08:37:18,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:18,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:18,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:18,659 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-13 08:37:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:37,012 INFO L93 Difference]: Finished difference Result 3879 states and 6754 transitions. [2020-10-13 08:37:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:37,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 08:37:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:37,030 INFO L225 Difference]: With dead ends: 3879 [2020-10-13 08:37:37,030 INFO L226 Difference]: Without dead ends: 2819 [2020-10-13 08:37:37,034 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 08:37:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-13 08:37:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2759. [2020-10-13 08:37:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-13 08:37:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4365 transitions. [2020-10-13 08:37:37,107 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4365 transitions. Word has length 90 [2020-10-13 08:37:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:37,108 INFO L479 AbstractCegarLoop]: Abstraction has 2759 states and 4365 transitions. [2020-10-13 08:37:37,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4365 transitions. [2020-10-13 08:37:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 08:37:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:37,110 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] [2020-10-13 08:37:37,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:37:37,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1811228731, now seen corresponding path program 1 times [2020-10-13 08:37:37,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:37,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688099981] [2020-10-13 08:37:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:37:37,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-13 08:37:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:37:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:37:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:37,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:37:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:37:38,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:37:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:38,164 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 08:37:38,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688099981] [2020-10-13 08:37:38,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:38,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:37:38,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868708732] [2020-10-13 08:37:38,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:37:38,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:38,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:37:38,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:37:38,168 INFO L87 Difference]: Start difference. First operand 2759 states and 4365 transitions. Second operand 6 states. [2020-10-13 08:38:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:01,625 INFO L93 Difference]: Finished difference Result 10487 states and 16908 transitions. [2020-10-13 08:38:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:38:01,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-13 08:38:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:01,673 INFO L225 Difference]: With dead ends: 10487 [2020-10-13 08:38:01,673 INFO L226 Difference]: Without dead ends: 7734 [2020-10-13 08:38:01,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:38:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2020-10-13 08:38:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7707. [2020-10-13 08:38:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7707 states. [2020-10-13 08:38:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 11387 transitions. [2020-10-13 08:38:02,019 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 11387 transitions. Word has length 95 [2020-10-13 08:38:02,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:02,020 INFO L479 AbstractCegarLoop]: Abstraction has 7707 states and 11387 transitions. [2020-10-13 08:38:02,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:38:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 11387 transitions. [2020-10-13 08:38:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 08:38:02,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:02,023 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] [2020-10-13 08:38:02,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:38:02,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:02,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2136271063, now seen corresponding path program 1 times [2020-10-13 08:38:02,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:02,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188821603] [2020-10-13 08:38:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 08:38:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:38:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-13 08:38:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-13 08:38:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:38:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:38:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:38:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:38:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:38:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:38:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,675 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 08:38:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188821603] [2020-10-13 08:38:03,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:03,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:03,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878288232] [2020-10-13 08:38:03,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:03,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:03,684 INFO L87 Difference]: Start difference. First operand 7707 states and 11387 transitions. Second operand 5 states. [2020-10-13 08:38:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:23,414 INFO L93 Difference]: Finished difference Result 21122 states and 32003 transitions. [2020-10-13 08:38:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:23,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 08:38:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:23,486 INFO L225 Difference]: With dead ends: 21122 [2020-10-13 08:38:23,486 INFO L226 Difference]: Without dead ends: 13421 [2020-10-13 08:38:23,512 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 08:38:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2020-10-13 08:38:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13416. [2020-10-13 08:38:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13416 states. [2020-10-13 08:38:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 19532 transitions. [2020-10-13 08:38:23,922 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 19532 transitions. Word has length 113 [2020-10-13 08:38:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:23,924 INFO L479 AbstractCegarLoop]: Abstraction has 13416 states and 19532 transitions. [2020-10-13 08:38:23,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 19532 transitions. [2020-10-13 08:38:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 08:38:23,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:23,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:23,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:38:23,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:23,944 INFO L82 PathProgramCache]: Analyzing trace with hash -788854133, now seen corresponding path program 1 times [2020-10-13 08:38:23,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:23,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822382445] [2020-10-13 08:38:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:38:28,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:38:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:38:28,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 08:38:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:38:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:38:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:29,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:38:29,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:38:29,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:29,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:38:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:29,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:38:29,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:38:29,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:38:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:38:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 08:38:29,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822382445] [2020-10-13 08:38:29,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:29,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:29,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830240075] [2020-10-13 08:38:29,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:29,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:29,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:29,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:29,358 INFO L87 Difference]: Start difference. First operand 13416 states and 19532 transitions. Second operand 5 states. [2020-10-13 08:38:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:56,419 INFO L93 Difference]: Finished difference Result 28568 states and 43574 transitions. [2020-10-13 08:38:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:56,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 08:38:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:56,508 INFO L225 Difference]: With dead ends: 28568 [2020-10-13 08:38:56,508 INFO L226 Difference]: Without dead ends: 18413 [2020-10-13 08:38:56,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 08:38:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18413 states. [2020-10-13 08:38:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18413 to 18331. [2020-10-13 08:38:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18331 states. [2020-10-13 08:38:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 27362 transitions. [2020-10-13 08:38:57,042 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 27362 transitions. Word has length 164 [2020-10-13 08:38:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:57,043 INFO L479 AbstractCegarLoop]: Abstraction has 18331 states and 27362 transitions. [2020-10-13 08:38:57,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 27362 transitions. [2020-10-13 08:38:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 08:38:57,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:57,053 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, 1, 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 08:38:57,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:38:57,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash 424050373, now seen corresponding path program 1 times [2020-10-13 08:38:57,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:57,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362448616] [2020-10-13 08:38:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:02,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:02,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 08:39:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:39:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-13 08:39:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-13 08:39:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:39:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:39:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:02,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:39:02,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:39:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 08:39:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:02,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:39:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:39:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:39:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:39:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-13 08:39:02,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362448616] [2020-10-13 08:39:02,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:39:02,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:39:02,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825626341] [2020-10-13 08:39:02,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:02,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:02,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:02,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:02,826 INFO L87 Difference]: Start difference. First operand 18331 states and 27362 transitions. Second operand 5 states. [2020-10-13 08:39:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:28,105 INFO L93 Difference]: Finished difference Result 53706 states and 83619 transitions. [2020-10-13 08:39:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:28,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-13 08:39:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:28,270 INFO L225 Difference]: With dead ends: 53706 [2020-10-13 08:39:28,271 INFO L226 Difference]: Without dead ends: 35381 [2020-10-13 08:39:28,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:39:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35381 states. [2020-10-13 08:39:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35381 to 35376. [2020-10-13 08:39:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35376 states. [2020-10-13 08:39:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35376 states to 35376 states and 52221 transitions. [2020-10-13 08:39:29,449 INFO L78 Accepts]: Start accepts. Automaton has 35376 states and 52221 transitions. Word has length 243 [2020-10-13 08:39:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:29,450 INFO L479 AbstractCegarLoop]: Abstraction has 35376 states and 52221 transitions. [2020-10-13 08:39:29,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:39:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 35376 states and 52221 transitions. [2020-10-13 08:39:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 08:39:29,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:29,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:29,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:39:29,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -412427087, now seen corresponding path program 1 times [2020-10-13 08:39:29,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:29,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813256953] [2020-10-13 08:39:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 08:39:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:39:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4656 [2020-10-13 08:39:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-13 08:39:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:39:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:34,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:34,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:39:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:34,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:39:34,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:39:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:39:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:34,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:34,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 08:39:34,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-13 08:39:34,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-13 08:39:34,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:35,209 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 08:39:35,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813256953] [2020-10-13 08:39:35,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:35,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:39:35,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039921797] [2020-10-13 08:39:35,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:35,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:35,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:35,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:35,214 INFO L87 Difference]: Start difference. First operand 35376 states and 52221 transitions. Second operand 5 states. [2020-10-13 08:40:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:08,071 INFO L93 Difference]: Finished difference Result 102355 states and 159816 transitions. [2020-10-13 08:40:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:08,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 08:40:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:08,463 INFO L225 Difference]: With dead ends: 102355 [2020-10-13 08:40:08,463 INFO L226 Difference]: Without dead ends: 66985 [2020-10-13 08:40:08,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66985 states. [2020-10-13 08:40:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66985 to 66978. [2020-10-13 08:40:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66978 states. [2020-10-13 08:40:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66978 states to 66978 states and 97657 transitions. [2020-10-13 08:40:10,241 INFO L78 Accepts]: Start accepts. Automaton has 66978 states and 97657 transitions. Word has length 316 [2020-10-13 08:40:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:10,242 INFO L479 AbstractCegarLoop]: Abstraction has 66978 states and 97657 transitions. [2020-10-13 08:40:10,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 66978 states and 97657 transitions. [2020-10-13 08:40:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-13 08:40:10,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:10,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:10,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:40:10,279 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2011467847, now seen corresponding path program 1 times [2020-10-13 08:40:10,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:10,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989151158] [2020-10-13 08:40:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:15,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 08:40:15,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:40:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 08:40:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 330 [2020-10-13 08:40:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:40:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:15,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:15,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:40:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:40:15,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 08:40:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 08:40:16,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 08:40:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-13 08:40:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-13 08:40:16,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989151158] [2020-10-13 08:40:16,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:16,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:16,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713242540] [2020-10-13 08:40:16,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:16,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:16,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:16,274 INFO L87 Difference]: Start difference. First operand 66978 states and 97657 transitions. Second operand 5 states.