/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:13:43,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:13:43,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:13:43,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:13:43,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:13:43,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:13:43,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:13:43,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:13:43,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:13:43,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:13:43,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:13:43,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:13:43,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:13:43,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:13:43,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:13:43,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:13:43,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:13:43,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:13:43,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:13:43,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:13:43,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:13:43,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:13:43,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:13:43,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:13:43,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:13:43,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:13:43,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:13:43,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:13:43,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:13:43,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:13:43,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:13:43,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:13:43,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:13:43,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:13:43,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:13:43,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:13:43,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:13:43,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:13:43,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:13:43,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:13:43,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:13:43,702 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 [2020-10-14 21:13:43,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:13:43,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:13:43,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:13:43,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:13:43,730 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:13:43,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:13:43,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:13:43,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:13:43,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:13:43,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:13:43,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:13:43,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:13:43,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:13:43,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:13:43,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:13:43,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:13:43,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:13:43,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:13:43,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:13:43,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:13:43,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:13:43,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:13:43,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:13:43,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:13:43,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:13:43,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:13:43,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:13:43,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:13:43,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:13:43,735 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:13:44,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:13:44,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:13:44,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:13:44,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:13:44,170 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:13:44,171 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-14 21:13:44,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ac4d38e/4ce18864ff9b4550a90063a55fe61db6/FLAG0494400ee [2020-10-14 21:13:45,157 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:13:45,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-14 21:13:45,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ac4d38e/4ce18864ff9b4550a90063a55fe61db6/FLAG0494400ee [2020-10-14 21:13:45,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ac4d38e/4ce18864ff9b4550a90063a55fe61db6 [2020-10-14 21:13:45,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:13:45,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:13:45,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:45,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:13:45,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:13:45,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:45" (1/1) ... [2020-10-14 21:13:45,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:45, skipping insertion in model container [2020-10-14 21:13:45,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:45" (1/1) ... [2020-10-14 21:13:45,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:13:45,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:13:47,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:47,632 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:13:48,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:48,416 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:13:48,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48 WrapperNode [2020-10-14 21:13:48,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:48,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:13:48,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:13:48,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:13:48,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2020-10-14 21:13:48,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:13:48,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:13:48,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:13:48,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:13:48,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (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 [2020-10-14 21:13:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:13:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:13:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:13:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:13:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:13:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:13:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:13:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:13:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:13:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:13:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:13:55,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:13:55,131 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:13:55,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:55 BoogieIcfgContainer [2020-10-14 21:13:55,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:13:55,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:13:55,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:13:55,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:13:55,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:45" (1/3) ... [2020-10-14 21:13:55,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b66220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:55, skipping insertion in model container [2020-10-14 21:13:55,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (2/3) ... [2020-10-14 21:13:55,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b66220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:55, skipping insertion in model container [2020-10-14 21:13:55,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:55" (3/3) ... [2020-10-14 21:13:55,159 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2020-10-14 21:13:55,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:13:55,188 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:13:55,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:13:55,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:13:55,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:13:55,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:13:55,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:13:55,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:13:55,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:13:55,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:13:55,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:13:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:13:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 21:13:55,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:55,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:55,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:55,325 INFO L82 PathProgramCache]: Analyzing trace with hash -593043574, now seen corresponding path program 1 times [2020-10-14 21:13:55,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:55,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933660253] [2020-10-14 21:13:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:56,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:56,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:13:56,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-14 21:13:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:56,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:13:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:13:56,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:56,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:56,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:13:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:56,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:13:56,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933660253] [2020-10-14 21:13:56,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:56,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:13:56,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937575156] [2020-10-14 21:13:56,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:13:56,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:13:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:13:56,521 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:14:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:10,428 INFO L93 Difference]: Finished difference Result 3253 states and 6292 transitions. [2020-10-14 21:14:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:14:10,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 21:14:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:10,470 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 21:14:10,470 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 21:14:10,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 21:14:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 21:14:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 21:14:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 4145 transitions. [2020-10-14 21:14:10,675 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 4145 transitions. Word has length 69 [2020-10-14 21:14:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:10,676 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 4145 transitions. [2020-10-14 21:14:10,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:14:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 4145 transitions. [2020-10-14 21:14:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 21:14:10,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:10,684 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:10,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:14:10,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash 198959659, now seen corresponding path program 1 times [2020-10-14 21:14:10,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:10,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558719242] [2020-10-14 21:14:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 21:14:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-10-14 21:14:12,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:14:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 21:14:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:14:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:14:12,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 21:14:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:14:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:14:12,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558719242] [2020-10-14 21:14:12,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:12,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:14:12,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80803443] [2020-10-14 21:14:12,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:14:12,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:14:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:12,765 INFO L87 Difference]: Start difference. First operand 2331 states and 4145 transitions. Second operand 6 states. [2020-10-14 21:14:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:22,662 INFO L93 Difference]: Finished difference Result 7071 states and 12730 transitions. [2020-10-14 21:14:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:14:22,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-10-14 21:14:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:22,699 INFO L225 Difference]: With dead ends: 7071 [2020-10-14 21:14:22,700 INFO L226 Difference]: Without dead ends: 4746 [2020-10-14 21:14:22,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2020-10-14 21:14:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4711. [2020-10-14 21:14:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4711 states. [2020-10-14 21:14:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 7075 transitions. [2020-10-14 21:14:22,889 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 7075 transitions. Word has length 148 [2020-10-14 21:14:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:22,892 INFO L479 AbstractCegarLoop]: Abstraction has 4711 states and 7075 transitions. [2020-10-14 21:14:22,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:14:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 7075 transitions. [2020-10-14 21:14:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 21:14:22,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:22,907 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, 2, 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] [2020-10-14 21:14:22,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:22,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 765081943, now seen corresponding path program 1 times [2020-10-14 21:14:22,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:22,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840701066] [2020-10-14 21:14:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 21:14:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-10-14 21:14:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:14:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:24,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:14:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:24,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:24,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:14:24,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 21:14:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:24,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:14:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:24,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840701066] [2020-10-14 21:14:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:24,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162247642] [2020-10-14 21:14:24,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:24,407 INFO L87 Difference]: Start difference. First operand 4711 states and 7075 transitions. Second operand 7 states. [2020-10-14 21:14:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:36,007 INFO L93 Difference]: Finished difference Result 14354 states and 21916 transitions. [2020-10-14 21:14:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:14:36,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-14 21:14:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:36,068 INFO L225 Difference]: With dead ends: 14354 [2020-10-14 21:14:36,069 INFO L226 Difference]: Without dead ends: 9649 [2020-10-14 21:14:36,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2020-10-14 21:14:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 7910. [2020-10-14 21:14:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7910 states. [2020-10-14 21:14:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 11232 transitions. [2020-10-14 21:14:36,367 INFO L78 Accepts]: Start accepts. Automaton has 7910 states and 11232 transitions. Word has length 154 [2020-10-14 21:14:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:36,372 INFO L479 AbstractCegarLoop]: Abstraction has 7910 states and 11232 transitions. [2020-10-14 21:14:36,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states and 11232 transitions. [2020-10-14 21:14:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 21:14:36,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:36,376 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, 2, 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] [2020-10-14 21:14:36,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:14:36,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:36,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1242566363, now seen corresponding path program 1 times [2020-10-14 21:14:36,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:36,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780735466] [2020-10-14 21:14:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:14:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:37,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:14:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:14:37,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:14:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:14:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:37,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780735466] [2020-10-14 21:14:37,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:37,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:37,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417635952] [2020-10-14 21:14:37,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:37,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:37,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:37,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:37,947 INFO L87 Difference]: Start difference. First operand 7910 states and 11232 transitions. Second operand 7 states. [2020-10-14 21:14:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:50,297 INFO L93 Difference]: Finished difference Result 23298 states and 34239 transitions. [2020-10-14 21:14:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:50,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-14 21:14:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:50,371 INFO L225 Difference]: With dead ends: 23298 [2020-10-14 21:14:50,371 INFO L226 Difference]: Without dead ends: 15394 [2020-10-14 21:14:50,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15394 states. [2020-10-14 21:14:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15394 to 15149. [2020-10-14 21:14:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15149 states. [2020-10-14 21:14:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15149 states to 15149 states and 20169 transitions. [2020-10-14 21:14:50,804 INFO L78 Accepts]: Start accepts. Automaton has 15149 states and 20169 transitions. Word has length 172 [2020-10-14 21:14:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:50,805 INFO L479 AbstractCegarLoop]: Abstraction has 15149 states and 20169 transitions. [2020-10-14 21:14:50,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 15149 states and 20169 transitions. [2020-10-14 21:14:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 21:14:50,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:50,812 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:50,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:14:50,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1910201847, now seen corresponding path program 1 times [2020-10-14 21:14:50,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:50,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830996913] [2020-10-14 21:14:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 21:14:52,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-14 21:14:52,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:14:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:14:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:14:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:14:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:14:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 21:14:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 21:14:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:14:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:14:52,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830996913] [2020-10-14 21:14:52,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:52,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:14:52,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553827399] [2020-10-14 21:14:52,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:52,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:52,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:52,975 INFO L87 Difference]: Start difference. First operand 15149 states and 20169 transitions. Second operand 7 states. [2020-10-14 21:15:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:06,274 INFO L93 Difference]: Finished difference Result 29190 states and 41970 transitions. [2020-10-14 21:15:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:15:06,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-14 21:15:06,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:06,326 INFO L225 Difference]: With dead ends: 29190 [2020-10-14 21:15:06,326 INFO L226 Difference]: Without dead ends: 12449 [2020-10-14 21:15:06,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:15:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-10-14 21:15:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 11990. [2020-10-14 21:15:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11990 states. [2020-10-14 21:15:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11990 states to 11990 states and 15640 transitions. [2020-10-14 21:15:06,819 INFO L78 Accepts]: Start accepts. Automaton has 11990 states and 15640 transitions. Word has length 268 [2020-10-14 21:15:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:06,820 INFO L479 AbstractCegarLoop]: Abstraction has 11990 states and 15640 transitions. [2020-10-14 21:15:06,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11990 states and 15640 transitions. [2020-10-14 21:15:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 21:15:06,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:06,826 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:06,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:15:06,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1073734017, now seen corresponding path program 1 times [2020-10-14 21:15:06,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:06,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829012569] [2020-10-14 21:15:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:08,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 21:15:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-14 21:15:08,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:08,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:15:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:15:08,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:08,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:15:09,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:09,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:09,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:09,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:15:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:15:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:09,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:15:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:15:09,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829012569] [2020-10-14 21:15:09,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:09,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:15:09,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593713220] [2020-10-14 21:15:09,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:09,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:09,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:09,638 INFO L87 Difference]: Start difference. First operand 11990 states and 15640 transitions. Second operand 6 states. [2020-10-14 21:15:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:22,800 INFO L93 Difference]: Finished difference Result 33909 states and 47012 transitions. [2020-10-14 21:15:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:15:22,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2020-10-14 21:15:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:22,891 INFO L225 Difference]: With dead ends: 33909 [2020-10-14 21:15:22,891 INFO L226 Difference]: Without dead ends: 21912 [2020-10-14 21:15:22,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21912 states. [2020-10-14 21:15:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21912 to 20959. [2020-10-14 21:15:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20959 states. [2020-10-14 21:15:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20959 states to 20959 states and 28138 transitions. [2020-10-14 21:15:23,428 INFO L78 Accepts]: Start accepts. Automaton has 20959 states and 28138 transitions. Word has length 304 [2020-10-14 21:15:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:23,430 INFO L479 AbstractCegarLoop]: Abstraction has 20959 states and 28138 transitions. [2020-10-14 21:15:23,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:15:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 20959 states and 28138 transitions. [2020-10-14 21:15:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 21:15:23,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:23,438 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:23,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:23,439 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:23,440 INFO L82 PathProgramCache]: Analyzing trace with hash 68784455, now seen corresponding path program 1 times [2020-10-14 21:15:23,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:23,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005667558] [2020-10-14 21:15:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 21:15:25,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-14 21:15:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:15:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:15:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:25,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:15:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:15:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:15:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:15:25,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:25,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 21:15:25,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:15:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:15:26,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005667558] [2020-10-14 21:15:26,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:26,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:26,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229887850] [2020-10-14 21:15:26,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:26,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:26,178 INFO L87 Difference]: Start difference. First operand 20959 states and 28138 transitions. Second operand 7 states. [2020-10-14 21:15:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:44,792 INFO L93 Difference]: Finished difference Result 51523 states and 75894 transitions. [2020-10-14 21:15:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:44,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-14 21:15:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:44,922 INFO L225 Difference]: With dead ends: 51523 [2020-10-14 21:15:44,922 INFO L226 Difference]: Without dead ends: 31337 [2020-10-14 21:15:44,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31337 states. [2020-10-14 21:15:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31337 to 30124. [2020-10-14 21:15:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30124 states. [2020-10-14 21:15:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30124 states to 30124 states and 40415 transitions. [2020-10-14 21:15:45,774 INFO L78 Accepts]: Start accepts. Automaton has 30124 states and 40415 transitions. Word has length 308 [2020-10-14 21:15:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:45,775 INFO L479 AbstractCegarLoop]: Abstraction has 30124 states and 40415 transitions. [2020-10-14 21:15:45,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30124 states and 40415 transitions. [2020-10-14 21:15:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 21:15:45,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:45,783 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:45,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:15:45,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:45,784 INFO L82 PathProgramCache]: Analyzing trace with hash -420632825, now seen corresponding path program 1 times [2020-10-14 21:15:45,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:45,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482564032] [2020-10-14 21:15:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 21:15:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 21:15:50,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:15:50,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:15:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:15:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:15:51,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:15:51,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:15:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:15:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:15:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:15:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 21:15:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:15:52,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482564032] [2020-10-14 21:15:52,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:52,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:52,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368834262] [2020-10-14 21:15:52,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:52,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:52,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:52,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:52,202 INFO L87 Difference]: Start difference. First operand 30124 states and 40415 transitions. Second operand 7 states. [2020-10-14 21:16:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:08,691 INFO L93 Difference]: Finished difference Result 60068 states and 81652 transitions. [2020-10-14 21:16:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:16:08,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-14 21:16:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:08,802 INFO L225 Difference]: With dead ends: 60068 [2020-10-14 21:16:08,802 INFO L226 Difference]: Without dead ends: 30717 [2020-10-14 21:16:08,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:16:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30717 states. [2020-10-14 21:16:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30717 to 30368. [2020-10-14 21:16:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30368 states. [2020-10-14 21:16:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30368 states to 30368 states and 40905 transitions. [2020-10-14 21:16:09,568 INFO L78 Accepts]: Start accepts. Automaton has 30368 states and 40905 transitions. Word has length 312 [2020-10-14 21:16:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:09,569 INFO L479 AbstractCegarLoop]: Abstraction has 30368 states and 40905 transitions. [2020-10-14 21:16:09,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 30368 states and 40905 transitions. [2020-10-14 21:16:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 21:16:09,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:09,579 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:09,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:09,579 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash 365597362, now seen corresponding path program 1 times [2020-10-14 21:16:09,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:09,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977430644] [2020-10-14 21:16:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:10,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 21:16:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 21:16:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 21:16:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 21:16:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:16:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:10,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:10,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:10,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:10,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:10,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:10,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:16:10,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:10,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:16:10,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:10,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:10,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:16:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:10,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:16:10,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:10,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:16:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 21:16:10,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977430644] [2020-10-14 21:16:10,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:10,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:16:10,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200828841] [2020-10-14 21:16:10,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:16:10,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:10,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:16:10,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:16:10,775 INFO L87 Difference]: Start difference. First operand 30368 states and 40905 transitions. Second operand 5 states. [2020-10-14 21:16:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:33,007 INFO L93 Difference]: Finished difference Result 85075 states and 119503 transitions. [2020-10-14 21:16:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:16:33,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-14 21:16:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:33,197 INFO L225 Difference]: With dead ends: 85075 [2020-10-14 21:16:33,197 INFO L226 Difference]: Without dead ends: 55480 [2020-10-14 21:16:33,261 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 [2020-10-14 21:16:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55480 states. [2020-10-14 21:16:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55480 to 52348. [2020-10-14 21:16:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52348 states. [2020-10-14 21:16:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52348 states to 52348 states and 68428 transitions. [2020-10-14 21:16:34,504 INFO L78 Accepts]: Start accepts. Automaton has 52348 states and 68428 transitions. Word has length 339 [2020-10-14 21:16:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:34,505 INFO L479 AbstractCegarLoop]: Abstraction has 52348 states and 68428 transitions. [2020-10-14 21:16:34,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:16:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 52348 states and 68428 transitions. [2020-10-14 21:16:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-14 21:16:34,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:34,523 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:16:34,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:16:34,524 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash 244809806, now seen corresponding path program 1 times [2020-10-14 21:16:34,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:34,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7074040] [2020-10-14 21:16:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:39,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:39,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 21:16:39,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 21:16:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:39,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:16:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 21:16:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:16:39,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:39,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:40,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:40,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:40,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 21:16:40,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:40,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:16:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:16:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 21:16:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:40,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:16:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 21:16:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 21:16:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:16:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:41,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:16:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 475 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 21:16:41,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7074040] [2020-10-14 21:16:41,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:41,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:16:41,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774992670] [2020-10-14 21:16:41,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:16:41,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:16:41,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:16:41,561 INFO L87 Difference]: Start difference. First operand 52348 states and 68428 transitions. Second operand 10 states. [2020-10-14 21:17:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:23,622 INFO L93 Difference]: Finished difference Result 121160 states and 160465 transitions. [2020-10-14 21:17:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 21:17:23,627 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 427 [2020-10-14 21:17:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:23,923 INFO L225 Difference]: With dead ends: 121160 [2020-10-14 21:17:23,924 INFO L226 Difference]: Without dead ends: 69585 [2020-10-14 21:17:23,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-14 21:17:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69585 states. [2020-10-14 21:17:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69585 to 69396. [2020-10-14 21:17:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69396 states.