/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:35:34,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:35:34,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:35:34,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:35:34,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:35:34,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:35:34,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:35:34,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:35:34,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:35:34,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:35:34,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:35:34,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:35:34,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:35:34,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:35:34,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:35:34,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:35:34,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:35:34,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:35:34,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:35:34,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:35:34,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:35:34,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:35:34,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:35:34,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:35:34,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:35:34,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:35:34,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:35:34,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:35:34,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:35:34,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:35:34,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:35:34,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:35:34,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:35:34,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:35:34,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:35:34,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:35:34,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:35:34,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:35:34,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:35:34,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:35:34,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:35:34,769 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 08:35:34,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:35:34,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:35:34,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:35:34,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:35:34,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:35:34,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:35:34,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:35:34,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:35:34,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:35:34,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:35:34,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:35:34,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:35:34,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:35:34,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:35:34,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:35:34,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:35:34,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:35:34,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:35:34,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:35:34,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:35:34,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:35:34,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:35:34,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:35:34,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:35:34,800 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 08:35:35,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:35:35,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:35:35,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:35:35,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:35:35,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:35:35,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-13 08:35:35,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe864b9d2/654df54c150b46098dd12bcd8cb83699/FLAG0375ca01d [2020-10-13 08:35:36,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:35:36,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-13 08:35:36,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe864b9d2/654df54c150b46098dd12bcd8cb83699/FLAG0375ca01d [2020-10-13 08:35:36,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe864b9d2/654df54c150b46098dd12bcd8cb83699 [2020-10-13 08:35:36,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:35:36,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:35:36,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:36,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:35:36,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:35:36,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:36" (1/1) ... [2020-10-13 08:35:36,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969165d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:36, skipping insertion in model container [2020-10-13 08:35:36,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:36" (1/1) ... [2020-10-13 08:35:36,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:35:36,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:35:38,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:38,702 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:35:39,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:39,526 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:35:39,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39 WrapperNode [2020-10-13 08:35:39,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:39,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:35:39,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:35:39,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:35:39,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (1/1) ... [2020-10-13 08:35:39,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:35:40,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:35:40,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:35:40,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:35:40,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (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 08:35:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:35:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:35:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:35:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:35:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:35:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:35:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:35:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:35:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:35:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:35:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:35:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:35:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:35:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:35:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:35:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:35:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:35:53,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:35:53,144 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:35:53,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:35:53 BoogieIcfgContainer [2020-10-13 08:35:53,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:35:53,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:35:53,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:35:53,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:35:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:35:36" (1/3) ... [2020-10-13 08:35:53,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7389bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:35:53, skipping insertion in model container [2020-10-13 08:35:53,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:39" (2/3) ... [2020-10-13 08:35:53,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7389bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:35:53, skipping insertion in model container [2020-10-13 08:35:53,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:35:53" (3/3) ... [2020-10-13 08:35:53,173 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2020-10-13 08:35:53,188 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:35:53,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:35:53,221 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:35:53,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:35:53,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:35:53,261 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:35:53,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:35:53,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:35:53,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:35:53,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:35:53,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:35:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:35:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 08:35:53,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:53,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:53,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:53,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:53,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1734538977, now seen corresponding path program 1 times [2020-10-13 08:35:53,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:53,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805511017] [2020-10-13 08:35:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:54,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 08:35:54,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-13 08:35:54,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:35:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:35:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 08:35:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:35:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:54,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:35:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:35:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:35:54,337 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 08:35:54,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805511017] [2020-10-13 08:35:54,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:35:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:35:54,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541751636] [2020-10-13 08:35:54,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:35:54,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:54,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:35:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:35:54,373 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:36:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:12,033 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-13 08:36:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:12,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 08:36:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:12,096 INFO L225 Difference]: With dead ends: 3152 [2020-10-13 08:36:12,097 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 08:36:12,112 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 08:36:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 08:36:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-13 08:36:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 08:36:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-13 08:36:12,345 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 44 [2020-10-13 08:36:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:12,346 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-13 08:36:12,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:36:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-13 08:36:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 08:36:12,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:12,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:36:12,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:36:12,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash 682848630, now seen corresponding path program 1 times [2020-10-13 08:36:12,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:12,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952931593] [2020-10-13 08:36:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:14,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:14,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:36:14,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-13 08:36:14,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:36:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 08:36:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:36:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:14,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:36:14,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:14,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:36:14,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:36:14,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:36:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:14,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952931593] [2020-10-13 08:36:14,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:14,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:14,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402797203] [2020-10-13 08:36:14,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:14,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:14,732 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-13 08:36:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:37,309 INFO L93 Difference]: Finished difference Result 5465 states and 9067 transitions. [2020-10-13 08:36:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:37,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 08:36:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:37,342 INFO L225 Difference]: With dead ends: 5465 [2020-10-13 08:36:37,343 INFO L226 Difference]: Without dead ends: 3586 [2020-10-13 08:36:37,351 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 08:36:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2020-10-13 08:36:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3561. [2020-10-13 08:36:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-10-13 08:36:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5507 transitions. [2020-10-13 08:36:37,503 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5507 transitions. Word has length 114 [2020-10-13 08:36:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:37,507 INFO L479 AbstractCegarLoop]: Abstraction has 3561 states and 5507 transitions. [2020-10-13 08:36:37,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5507 transitions. [2020-10-13 08:36:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 08:36:37,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:37,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:36:37,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:36:37,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash -564335073, now seen corresponding path program 1 times [2020-10-13 08:36:37,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:37,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76417056] [2020-10-13 08:36:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:36:39,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-13 08:36:39,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:36:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 08:36:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:39,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:36:39,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:36:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:36:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:36:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:39,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76417056] [2020-10-13 08:36:39,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:39,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:36:39,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510978092] [2020-10-13 08:36:39,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:36:39,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:39,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:36:39,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:39,564 INFO L87 Difference]: Start difference. First operand 3561 states and 5507 transitions. Second operand 6 states. [2020-10-13 08:37:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:03,435 INFO L93 Difference]: Finished difference Result 8783 states and 13880 transitions. [2020-10-13 08:37:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:37:03,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-13 08:37:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:03,468 INFO L225 Difference]: With dead ends: 8783 [2020-10-13 08:37:03,468 INFO L226 Difference]: Without dead ends: 5228 [2020-10-13 08:37:03,477 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 08:37:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2020-10-13 08:37:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5201. [2020-10-13 08:37:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5201 states. [2020-10-13 08:37:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 7455 transitions. [2020-10-13 08:37:03,610 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 7455 transitions. Word has length 117 [2020-10-13 08:37:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:03,611 INFO L479 AbstractCegarLoop]: Abstraction has 5201 states and 7455 transitions. [2020-10-13 08:37:03,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:37:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 7455 transitions. [2020-10-13 08:37:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:37:03,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:03,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:37:03,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:37:03,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1187383904, now seen corresponding path program 1 times [2020-10-13 08:37:03,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:03,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670063516] [2020-10-13 08:37:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:04,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:37:04,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-13 08:37:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:37:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:37:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:04,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:04,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:37:04,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:05,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:37:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:05,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670063516] [2020-10-13 08:37:05,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:05,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:05,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367337376] [2020-10-13 08:37:05,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:05,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:05,065 INFO L87 Difference]: Start difference. First operand 5201 states and 7455 transitions. Second operand 5 states. [2020-10-13 08:37:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:25,285 INFO L93 Difference]: Finished difference Result 10519 states and 15915 transitions. [2020-10-13 08:37:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:25,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:37:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:25,324 INFO L225 Difference]: With dead ends: 10519 [2020-10-13 08:37:25,324 INFO L226 Difference]: Without dead ends: 7770 [2020-10-13 08:37:25,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:37:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2020-10-13 08:37:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 7690. [2020-10-13 08:37:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7690 states. [2020-10-13 08:37:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 11114 transitions. [2020-10-13 08:37:25,560 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 11114 transitions. Word has length 134 [2020-10-13 08:37:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:25,562 INFO L479 AbstractCegarLoop]: Abstraction has 7690 states and 11114 transitions. [2020-10-13 08:37:25,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 11114 transitions. [2020-10-13 08:37:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:37:25,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:25,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:37:25,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:37:25,568 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash 988973573, now seen corresponding path program 1 times [2020-10-13 08:37:25,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:25,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709231600] [2020-10-13 08:37:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:37:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-13 08:37:26,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 08:37:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 08:37:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:26,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:26,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:26,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:37:26,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:37:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:37:26,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:37:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:26,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709231600] [2020-10-13 08:37:26,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:26,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:26,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145517612] [2020-10-13 08:37:26,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:26,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:26,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:26,710 INFO L87 Difference]: Start difference. First operand 7690 states and 11114 transitions. Second operand 5 states. [2020-10-13 08:37:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:44,965 INFO L93 Difference]: Finished difference Result 21095 states and 31304 transitions. [2020-10-13 08:37:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:44,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 08:37:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:45,032 INFO L225 Difference]: With dead ends: 21095 [2020-10-13 08:37:45,033 INFO L226 Difference]: Without dead ends: 13411 [2020-10-13 08:37:45,054 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 08:37:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13411 states. [2020-10-13 08:37:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13411 to 13398. [2020-10-13 08:37:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13398 states. [2020-10-13 08:37:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13398 states to 13398 states and 19194 transitions. [2020-10-13 08:37:45,386 INFO L78 Accepts]: Start accepts. Automaton has 13398 states and 19194 transitions. Word has length 144 [2020-10-13 08:37:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:45,387 INFO L479 AbstractCegarLoop]: Abstraction has 13398 states and 19194 transitions. [2020-10-13 08:37:45,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13398 states and 19194 transitions. [2020-10-13 08:37:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 08:37:45,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:45,393 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2020-10-13 08:37:45,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:37:45,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash -253932188, now seen corresponding path program 1 times [2020-10-13 08:37:45,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:45,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683277788] [2020-10-13 08:37:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:50,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:50,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 08:37:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:37:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 08:37:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 08:37:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:37:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:50,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:37:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:50,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:50,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:37:50,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:37:50,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:37:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:50,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:37:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:37:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:37:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:37:50,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683277788] [2020-10-13 08:37:51,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:51,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:51,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113834975] [2020-10-13 08:37:51,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:51,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:51,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:51,003 INFO L87 Difference]: Start difference. First operand 13398 states and 19194 transitions. Second operand 5 states. [2020-10-13 08:38:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:14,592 INFO L93 Difference]: Finished difference Result 28544 states and 42498 transitions. [2020-10-13 08:38:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:14,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 08:38:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:14,662 INFO L225 Difference]: With dead ends: 28544 [2020-10-13 08:38:14,662 INFO L226 Difference]: Without dead ends: 18393 [2020-10-13 08:38:14,684 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 08:38:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18393 states. [2020-10-13 08:38:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18393 to 18303. [2020-10-13 08:38:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18303 states. [2020-10-13 08:38:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18303 states to 18303 states and 26453 transitions. [2020-10-13 08:38:15,152 INFO L78 Accepts]: Start accepts. Automaton has 18303 states and 26453 transitions. Word has length 229 [2020-10-13 08:38:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:15,153 INFO L479 AbstractCegarLoop]: Abstraction has 18303 states and 26453 transitions. [2020-10-13 08:38:15,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18303 states and 26453 transitions. [2020-10-13 08:38:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 08:38:15,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:15,165 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:38:15,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:38:15,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:15,166 INFO L82 PathProgramCache]: Analyzing trace with hash 330139883, now seen corresponding path program 1 times [2020-10-13 08:38:15,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:15,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785806220] [2020-10-13 08:38:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 08:38:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:38:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 08:38:20,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 08:38:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:20,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:38:20,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:20,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:20,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:38:20,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:38:20,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:38:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 08:38:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 08:38:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:38:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:38:20,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785806220] [2020-10-13 08:38:20,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:20,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:20,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750894501] [2020-10-13 08:38:20,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:20,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:20,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:20,871 INFO L87 Difference]: Start difference. First operand 18303 states and 26453 transitions. Second operand 5 states. [2020-10-13 08:38:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:46,155 INFO L93 Difference]: Finished difference Result 53647 states and 80111 transitions. [2020-10-13 08:38:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:46,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-13 08:38:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:46,332 INFO L225 Difference]: With dead ends: 53647 [2020-10-13 08:38:46,332 INFO L226 Difference]: Without dead ends: 35350 [2020-10-13 08:38:46,393 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 08:38:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35350 states. [2020-10-13 08:38:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35350 to 35349. [2020-10-13 08:38:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35349 states. [2020-10-13 08:38:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35349 states to 35349 states and 49799 transitions. [2020-10-13 08:38:47,380 INFO L78 Accepts]: Start accepts. Automaton has 35349 states and 49799 transitions. Word has length 261 [2020-10-13 08:38:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:47,381 INFO L479 AbstractCegarLoop]: Abstraction has 35349 states and 49799 transitions. [2020-10-13 08:38:47,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 35349 states and 49799 transitions. [2020-10-13 08:38:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 08:38:47,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:47,406 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:38:47,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:38:47,407 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1523939047, now seen corresponding path program 1 times [2020-10-13 08:38:47,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:47,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99032731] [2020-10-13 08:38:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:52,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:52,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 08:38:52,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:38:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 08:38:52,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 265 [2020-10-13 08:38:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:38:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:38:52,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:38:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:52,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:52,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:38:52,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:38:52,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:38:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:38:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 08:38:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:38:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:38:53,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99032731] [2020-10-13 08:38:53,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:38:53,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:38:53,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857416960] [2020-10-13 08:38:53,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:53,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:53,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:53,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:53,516 INFO L87 Difference]: Start difference. First operand 35349 states and 49799 transitions. Second operand 5 states. [2020-10-13 08:39:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:13,356 INFO L93 Difference]: Finished difference Result 64208 states and 91518 transitions. [2020-10-13 08:39:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:13,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-13 08:39:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:13,541 INFO L225 Difference]: With dead ends: 64208 [2020-10-13 08:39:13,542 INFO L226 Difference]: Without dead ends: 35338 [2020-10-13 08:39:13,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:39:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35338 states. [2020-10-13 08:39:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35338 to 35338. [2020-10-13 08:39:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35338 states. [2020-10-13 08:39:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 49772 transitions. [2020-10-13 08:39:14,735 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 49772 transitions. Word has length 299 [2020-10-13 08:39:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:14,736 INFO L479 AbstractCegarLoop]: Abstraction has 35338 states and 49772 transitions. [2020-10-13 08:39:14,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:39:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 49772 transitions. [2020-10-13 08:39:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-13 08:39:14,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:14,774 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:14,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:39:14,775 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:14,776 INFO L82 PathProgramCache]: Analyzing trace with hash 205608542, now seen corresponding path program 1 times [2020-10-13 08:39:14,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:14,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159818542] [2020-10-13 08:39:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-13 08:39:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:39:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 08:39:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 373 [2020-10-13 08:39:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:39:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1