/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/Problem19_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:02:24,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:02:24,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:02:24,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:02:24,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:02:24,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:02:24,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:02:24,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:02:24,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:02:24,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:02:24,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:02:24,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:02:24,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:02:24,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:02:24,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:02:24,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:02:24,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:02:24,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:02:24,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:02:24,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:02:24,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:02:24,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:02:24,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:02:24,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:02:24,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:02:24,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:02:24,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:02:24,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:02:24,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:02:24,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:02:24,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:02:24,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:02:24,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:02:24,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:02:24,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:02:24,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:02:24,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:02:24,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:02:24,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:02:24,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:02:24,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:02:24,774 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 23:02:24,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:02:24,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:02:24,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:02:24,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:02:24,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:02:24,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:02:24,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:02:24,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:02:24,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:02:24,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:02:24,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:02:24,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:02:24,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:02:24,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:02:24,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:02:24,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:02:24,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:02:24,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:02:24,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:02:24,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:02:24,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:02:24,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:02:24,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:02:24,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:02:24,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:02:24,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:02:24,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:02:24,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:02:24,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:02:24,822 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 23:02:25,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:02:25,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:02:25,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:02:25,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:02:25,151 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:02:25,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25.c [2020-10-14 23:02:25,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995b2d0f6/4f85d12e9495404b89be3d02e97e629a/FLAG61059ae70 [2020-10-14 23:02:26,144 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:02:26,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label25.c [2020-10-14 23:02:26,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995b2d0f6/4f85d12e9495404b89be3d02e97e629a/FLAG61059ae70 [2020-10-14 23:02:26,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995b2d0f6/4f85d12e9495404b89be3d02e97e629a [2020-10-14 23:02:26,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:02:26,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:02:26,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:26,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:02:26,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:02:26,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:26" (1/1) ... [2020-10-14 23:02:26,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:26, skipping insertion in model container [2020-10-14 23:02:26,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:26" (1/1) ... [2020-10-14 23:02:26,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:02:26,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:02:29,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:29,111 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:02:30,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:30,132 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:02:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30 WrapperNode [2020-10-14 23:02:30,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:30,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:02:30,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:02:30,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:02:30,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (1/1) ... [2020-10-14 23:02:30,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:02:30,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:02:30,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:02:30,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:02:30,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (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 23:02:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:02:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:02:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:02:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:02:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:02:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:02:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:02:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:02:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:02:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:02:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:02:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:02:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:02:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:02:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:02:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:02:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:02:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:02:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:02:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:02:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:02:42,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:02:42,962 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:02:42,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:42 BoogieIcfgContainer [2020-10-14 23:02:42,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:02:42,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:02:42,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:02:42,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:02:42,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:02:26" (1/3) ... [2020-10-14 23:02:42,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521a08c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:42, skipping insertion in model container [2020-10-14 23:02:42,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:30" (2/3) ... [2020-10-14 23:02:42,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521a08c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:42, skipping insertion in model container [2020-10-14 23:02:42,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:42" (3/3) ... [2020-10-14 23:02:42,997 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label25.c [2020-10-14 23:02:43,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:02:43,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:02:43,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:02:43,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:02:43,059 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:02:43,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:02:43,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:02:43,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:02:43,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:02:43,060 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:02:43,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:02:43,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:02:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:02:43,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:43,115 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] [2020-10-14 23:02:43,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:43,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1757893778, now seen corresponding path program 1 times [2020-10-14 23:02:43,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:43,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797554695] [2020-10-14 23:02:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:02:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 23:02:43,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:43,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:02:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:02:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:02:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:43,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:44,018 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 23:02:44,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797554695] [2020-10-14 23:02:44,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:44,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:02:44,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343439380] [2020-10-14 23:02:44,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:02:44,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:44,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:02:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:02:44,046 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:03:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:12,831 INFO L93 Difference]: Finished difference Result 5030 states and 9452 transitions. [2020-10-14 23:03:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:03:12,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 23:03:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:12,877 INFO L225 Difference]: With dead ends: 5030 [2020-10-14 23:03:12,878 INFO L226 Difference]: Without dead ends: 3189 [2020-10-14 23:03:12,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:03:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-14 23:03:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3183. [2020-10-14 23:03:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2020-10-14 23:03:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4964 transitions. [2020-10-14 23:03:13,109 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4964 transitions. Word has length 42 [2020-10-14 23:03:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:13,110 INFO L479 AbstractCegarLoop]: Abstraction has 3183 states and 4964 transitions. [2020-10-14 23:03:13,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:03:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4964 transitions. [2020-10-14 23:03:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 23:03:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:13,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:13,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:03:13,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2063047884, now seen corresponding path program 1 times [2020-10-14 23:03:13,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:13,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138273877] [2020-10-14 23:03:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:15,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 23:03:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:03:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2554 [2020-10-14 23:03:15,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:15,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:15,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:15,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 23:03:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:03:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:15,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:03:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:03:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:16,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:03:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:03:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 23:03:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:16,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:03:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:03:16,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138273877] [2020-10-14 23:03:16,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:03:16,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:03:16,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677804996] [2020-10-14 23:03:16,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:03:16,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:03:16,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:03:16,354 INFO L87 Difference]: Start difference. First operand 3183 states and 4964 transitions. Second operand 7 states. [2020-10-14 23:04:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:04:04,978 INFO L93 Difference]: Finished difference Result 9390 states and 14715 transitions. [2020-10-14 23:04:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:04:04,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-14 23:04:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:04:05,014 INFO L225 Difference]: With dead ends: 9390 [2020-10-14 23:04:05,014 INFO L226 Difference]: Without dead ends: 6213 [2020-10-14 23:04:05,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:04:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2020-10-14 23:04:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 6094. [2020-10-14 23:04:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6094 states. [2020-10-14 23:04:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8425 transitions. [2020-10-14 23:04:05,208 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8425 transitions. Word has length 115 [2020-10-14 23:04:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:05,211 INFO L479 AbstractCegarLoop]: Abstraction has 6094 states and 8425 transitions. [2020-10-14 23:04:05,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:04:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8425 transitions. [2020-10-14 23:04:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 23:04:05,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:05,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:05,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:04:05,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1639401162, now seen corresponding path program 1 times [2020-10-14 23:04:05,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:05,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545807015] [2020-10-14 23:04:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:06,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:06,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 23:04:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:04:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-10-14 23:04:06,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:06,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:04:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 23:04:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:04:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:06,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:04:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 23:04:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:04:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:04:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:04:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:04:06,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545807015] [2020-10-14 23:04:06,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:04:06,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:04:06,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476628055] [2020-10-14 23:04:06,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:04:06,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:04:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:04:06,847 INFO L87 Difference]: Start difference. First operand 6094 states and 8425 transitions. Second operand 8 states. [2020-10-14 23:05:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:07,062 INFO L93 Difference]: Finished difference Result 18195 states and 25587 transitions. [2020-10-14 23:05:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:05:07,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-14 23:05:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:07,144 INFO L225 Difference]: With dead ends: 18195 [2020-10-14 23:05:07,144 INFO L226 Difference]: Without dead ends: 12107 [2020-10-14 23:05:07,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:05:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12107 states. [2020-10-14 23:05:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12107 to 11980. [2020-10-14 23:05:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11980 states. [2020-10-14 23:05:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11980 states to 11980 states and 16589 transitions. [2020-10-14 23:05:07,593 INFO L78 Accepts]: Start accepts. Automaton has 11980 states and 16589 transitions. Word has length 115 [2020-10-14 23:05:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:07,595 INFO L479 AbstractCegarLoop]: Abstraction has 11980 states and 16589 transitions. [2020-10-14 23:05:07,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:05:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11980 states and 16589 transitions. [2020-10-14 23:05:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 23:05:07,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:07,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:07,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:05:07,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:07,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1612454429, now seen corresponding path program 1 times [2020-10-14 23:05:07,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:07,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632694628] [2020-10-14 23:05:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 23:05:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:05:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-14 23:05:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:08,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 23:05:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:08,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:05:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:08,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:05:08,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 23:05:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:08,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:05:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:05:08,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632694628] [2020-10-14 23:05:08,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:08,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:05:08,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454127488] [2020-10-14 23:05:08,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:05:08,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:05:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:05:08,796 INFO L87 Difference]: Start difference. First operand 11980 states and 16589 transitions. Second operand 7 states. [2020-10-14 23:06:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:19,651 INFO L93 Difference]: Finished difference Result 30462 states and 43884 transitions. [2020-10-14 23:06:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:06:19,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-14 23:06:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:19,736 INFO L225 Difference]: With dead ends: 30462 [2020-10-14 23:06:19,737 INFO L226 Difference]: Without dead ends: 18488 [2020-10-14 23:06:19,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:06:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2020-10-14 23:06:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 18106. [2020-10-14 23:06:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18106 states. [2020-10-14 23:06:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18106 states to 18106 states and 25360 transitions. [2020-10-14 23:06:20,302 INFO L78 Accepts]: Start accepts. Automaton has 18106 states and 25360 transitions. Word has length 123 [2020-10-14 23:06:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:20,303 INFO L479 AbstractCegarLoop]: Abstraction has 18106 states and 25360 transitions. [2020-10-14 23:06:20,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:06:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 18106 states and 25360 transitions. [2020-10-14 23:06:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 23:06:20,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:20,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:20,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:06:20,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 519637255, now seen corresponding path program 1 times [2020-10-14 23:06:20,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:20,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533353350] [2020-10-14 23:06:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:22,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:22,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 23:06:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:06:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-14 23:06:22,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:22,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:06:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:06:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:22,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:06:22,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:22,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:06:22,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 23:06:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:06:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:06:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:06:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:06:22,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533353350] [2020-10-14 23:06:22,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:06:22,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:06:22,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995136770] [2020-10-14 23:06:22,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:06:22,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:22,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:06:22,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:06:22,646 INFO L87 Difference]: Start difference. First operand 18106 states and 25360 transitions. Second operand 7 states.