/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:55:22,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:55:22,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:55:22,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:55:22,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:55:22,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:55:22,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:55:22,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:55:22,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:55:22,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:55:22,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:55:22,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:55:22,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:55:22,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:55:22,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:55:22,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:55:22,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:55:22,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:55:22,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:55:22,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:55:22,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:55:22,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:55:22,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:55:22,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:55:22,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:55:22,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:55:22,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:55:22,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:55:22,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:55:22,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:55:22,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:55:22,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:55:22,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:55:22,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:55:22,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:55:22,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:55:22,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:55:22,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:55:22,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:55:22,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:55:22,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:55:22,137 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 02:55:22,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:55:22,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:55:22,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:55:22,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:55:22,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:55:22,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:55:22,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:55:22,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:55:22,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:55:22,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:55:22,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:55:22,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:55:22,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:55:22,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:55:22,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:55:22,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:55:22,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:55:22,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:55:22,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:55:22,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:55:22,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:55:22,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:55:22,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:55:22,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:55:22,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:55:22,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:55:22,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:55:22,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:55:22,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:55:22,170 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:55:22,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:55:22,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:55:22,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:55:22,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:55:22,561 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:55:22,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-14 02:55:22,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5930155ed/72522ae42f0745b493481c9891d634c8/FLAGb45c63f8b [2020-10-14 02:55:23,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:55:23,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-14 02:55:23,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5930155ed/72522ae42f0745b493481c9891d634c8/FLAGb45c63f8b [2020-10-14 02:55:24,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5930155ed/72522ae42f0745b493481c9891d634c8 [2020-10-14 02:55:24,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:55:24,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:55:24,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:55:24,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:55:24,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:55:24,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:55:24" (1/1) ... [2020-10-14 02:55:24,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:24, skipping insertion in model container [2020-10-14 02:55:24,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:55:24" (1/1) ... [2020-10-14 02:55:24,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:55:24,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:55:26,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:55:26,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:55:27,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:55:27,082 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:55:27,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27 WrapperNode [2020-10-14 02:55:27,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:55:27,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:55:27,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:55:27,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:55:27,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (1/1) ... [2020-10-14 02:55:27,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:55:27,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:55:27,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:55:27,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:55:27,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (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 02:55:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:55:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:55:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:55:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:55:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:55:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:55:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:55:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:55:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:55:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:55:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:55:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:55:32,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:55:32,949 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:55:32,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:55:32 BoogieIcfgContainer [2020-10-14 02:55:32,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:55:32,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:55:32,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:55:32,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:55:32,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:55:24" (1/3) ... [2020-10-14 02:55:32,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525bd686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:55:32, skipping insertion in model container [2020-10-14 02:55:32,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:55:27" (2/3) ... [2020-10-14 02:55:32,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525bd686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:55:32, skipping insertion in model container [2020-10-14 02:55:32,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:55:32" (3/3) ... [2020-10-14 02:55:32,972 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label54.c [2020-10-14 02:55:32,985 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:55:32,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:55:33,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:55:33,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:55:33,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:55:33,043 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:55:33,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:55:33,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:55:33,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:55:33,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:55:33,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:55:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:55:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 02:55:33,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:33,096 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] [2020-10-14 02:55:33,097 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:33,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1843653234, now seen corresponding path program 1 times [2020-10-14 02:55:33,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:33,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956793414] [2020-10-14 02:55:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 02:55:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 02:55:33,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:55:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:55:33,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 02:55:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:55:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:55:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:55:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,856 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 02:55:33,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956793414] [2020-10-14 02:55:33,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:55:33,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:55:33,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394776918] [2020-10-14 02:55:33,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:55:33,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:55:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:55:33,890 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:55:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:44,009 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:55:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:55:44,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 02:55:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:44,137 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:55:44,138 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:55:44,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:55:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:55:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:55:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:55:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:55:44,404 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 39 [2020-10-14 02:55:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:44,405 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:55:44,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:55:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:55:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 02:55:44,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:44,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:44,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:55:44,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1602190379, now seen corresponding path program 1 times [2020-10-14 02:55:44,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:44,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421019619] [2020-10-14 02:55:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:55:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:55:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-14 02:55:45,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:45,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:55:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:55:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:55:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:55:45,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:45,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:45,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:45,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:55:45,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:55:45,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:55:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:55:45,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421019619] [2020-10-14 02:55:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:45,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:55:45,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844939485] [2020-10-14 02:55:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:55:45,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:55:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:55:45,800 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-14 02:56:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:00,387 INFO L93 Difference]: Finished difference Result 3893 states and 6552 transitions. [2020-10-14 02:56:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:56:00,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-14 02:56:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:00,404 INFO L225 Difference]: With dead ends: 3893 [2020-10-14 02:56:00,404 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 02:56:00,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 02:56:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 02:56:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342. [2020-10-14 02:56:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-14 02:56:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3590 transitions. [2020-10-14 02:56:00,486 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3590 transitions. Word has length 114 [2020-10-14 02:56:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:00,488 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3590 transitions. [2020-10-14 02:56:00,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:56:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3590 transitions. [2020-10-14 02:56:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 02:56:00,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:00,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:00,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:56:00,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash -304531670, now seen corresponding path program 1 times [2020-10-14 02:56:00,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:00,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398791624] [2020-10-14 02:56:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:56:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:56:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-10-14 02:56:02,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:02,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:56:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:56:02,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:02,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:02,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:02,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:02,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:02,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:56:02,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:02,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:56:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:56:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:02,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:56:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:56:02,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398791624] [2020-10-14 02:56:02,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:02,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:56:02,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753201685] [2020-10-14 02:56:02,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:56:02,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:02,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:56:02,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:56:02,616 INFO L87 Difference]: Start difference. First operand 2342 states and 3590 transitions. Second operand 5 states. [2020-10-14 02:56:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:15,046 INFO L93 Difference]: Finished difference Result 7016 states and 10859 transitions. [2020-10-14 02:56:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:56:15,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 02:56:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:15,085 INFO L225 Difference]: With dead ends: 7016 [2020-10-14 02:56:15,085 INFO L226 Difference]: Without dead ends: 4680 [2020-10-14 02:56:15,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:56:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-10-14 02:56:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4676. [2020-10-14 02:56:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-10-14 02:56:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 6376 transitions. [2020-10-14 02:56:15,283 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 6376 transitions. Word has length 117 [2020-10-14 02:56:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:15,285 INFO L479 AbstractCegarLoop]: Abstraction has 4676 states and 6376 transitions. [2020-10-14 02:56:15,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:56:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 6376 transitions. [2020-10-14 02:56:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 02:56:15,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:15,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:15,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:56:15,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash 12800074, now seen corresponding path program 1 times [2020-10-14 02:56:15,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:15,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023948889] [2020-10-14 02:56:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:16,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 02:56:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:56:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-14 02:56:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 02:56:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:56:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:16,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:16,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:56:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:16,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:16,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:56:16,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 02:56:16,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:16,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:56:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:56:16,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023948889] [2020-10-14 02:56:16,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:16,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:56:16,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277710265] [2020-10-14 02:56:16,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:56:16,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:16,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:56:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:56:16,807 INFO L87 Difference]: Start difference. First operand 4676 states and 6376 transitions. Second operand 5 states. [2020-10-14 02:56:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:31,025 INFO L93 Difference]: Finished difference Result 14010 states and 19412 transitions. [2020-10-14 02:56:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:56:31,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 02:56:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:31,072 INFO L225 Difference]: With dead ends: 14010 [2020-10-14 02:56:31,072 INFO L226 Difference]: Without dead ends: 9340 [2020-10-14 02:56:31,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:56:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2020-10-14 02:56:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 9332. [2020-10-14 02:56:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-14 02:56:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 12036 transitions. [2020-10-14 02:56:31,323 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 12036 transitions. Word has length 133 [2020-10-14 02:56:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:31,324 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 12036 transitions. [2020-10-14 02:56:31,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:56:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 12036 transitions. [2020-10-14 02:56:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 02:56:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:31,329 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:56:31,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:56:31,330 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 376260011, now seen corresponding path program 1 times [2020-10-14 02:56:31,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:31,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257908981] [2020-10-14 02:56:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:33,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 02:56:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:56:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-10-14 02:56:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:33,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:56:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:56:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:34,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:56:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:56:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:56:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:56:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 02:56:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 02:56:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:56:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:56:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:56:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:56:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:56:34,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257908981] [2020-10-14 02:56:34,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:34,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:56:34,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063866900] [2020-10-14 02:56:34,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:56:34,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:34,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:56:34,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:56:34,422 INFO L87 Difference]: Start difference. First operand 9332 states and 12036 transitions. Second operand 7 states. [2020-10-14 02:57:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:01,130 INFO L93 Difference]: Finished difference Result 37548 states and 51457 transitions. [2020-10-14 02:57:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:57:01,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-14 02:57:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:01,255 INFO L225 Difference]: With dead ends: 37548 [2020-10-14 02:57:01,255 INFO L226 Difference]: Without dead ends: 28222 [2020-10-14 02:57:01,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:57:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28222 states. [2020-10-14 02:57:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28222 to 28086. [2020-10-14 02:57:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28086 states. [2020-10-14 02:57:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28086 states to 28086 states and 35610 transitions. [2020-10-14 02:57:02,942 INFO L78 Accepts]: Start accepts. Automaton has 28086 states and 35610 transitions. Word has length 188 [2020-10-14 02:57:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:02,943 INFO L479 AbstractCegarLoop]: Abstraction has 28086 states and 35610 transitions. [2020-10-14 02:57:02,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:57:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 28086 states and 35610 transitions. [2020-10-14 02:57:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 02:57:02,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:02,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:57:02,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:57:02,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:02,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1674123170, now seen corresponding path program 1 times [2020-10-14 02:57:02,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:02,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342986354] [2020-10-14 02:57:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:03,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:03,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 02:57:03,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:57:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 02:57:03,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:03,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 02:57:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:57:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:57:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:03,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:03,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:57:03,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:03,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 02:57:04,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 02:57:04,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 02:57:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:04,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342986354] [2020-10-14 02:57:04,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:04,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:57:04,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018717838] [2020-10-14 02:57:04,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:57:04,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:57:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:57:04,323 INFO L87 Difference]: Start difference. First operand 28086 states and 35610 transitions. Second operand 6 states. [2020-10-14 02:57:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:26,034 INFO L93 Difference]: Finished difference Result 74063 states and 98590 transitions. [2020-10-14 02:57:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:57:26,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-10-14 02:57:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:26,180 INFO L225 Difference]: With dead ends: 74063 [2020-10-14 02:57:26,180 INFO L226 Difference]: Without dead ends: 45987 [2020-10-14 02:57:26,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 02:57:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45987 states. [2020-10-14 02:57:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45987 to 45973. [2020-10-14 02:57:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45973 states. [2020-10-14 02:57:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45973 states to 45973 states and 58293 transitions. [2020-10-14 02:57:27,234 INFO L78 Accepts]: Start accepts. Automaton has 45973 states and 58293 transitions. Word has length 209 [2020-10-14 02:57:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:27,235 INFO L479 AbstractCegarLoop]: Abstraction has 45973 states and 58293 transitions. [2020-10-14 02:57:27,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:57:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 45973 states and 58293 transitions. [2020-10-14 02:57:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 02:57:27,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:27,248 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:57:27,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:57:27,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash -976284346, now seen corresponding path program 1 times [2020-10-14 02:57:27,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:27,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140587293] [2020-10-14 02:57:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:27,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 02:57:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:57:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 02:57:32,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:32,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:57:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:57:32,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:32,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:32,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:57:32,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:32,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:32,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:32,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:57:32,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 02:57:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:32,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:57:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:57:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:57:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:57:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:32,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:57:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:57:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:57:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:57:32,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140587293] [2020-10-14 02:57:32,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:32,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:57:32,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121105444] [2020-10-14 02:57:32,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:57:32,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:57:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:57:32,839 INFO L87 Difference]: Start difference. First operand 45973 states and 58293 transitions. Second operand 7 states. [2020-10-14 02:57:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:47,992 INFO L93 Difference]: Finished difference Result 99402 states and 129574 transitions. [2020-10-14 02:57:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:57:47,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 02:57:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:48,226 INFO L225 Difference]: With dead ends: 99402 [2020-10-14 02:57:48,228 INFO L226 Difference]: Without dead ends: 53439 [2020-10-14 02:57:48,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 02:57:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53439 states. [2020-10-14 02:57:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53439 to 53286. [2020-10-14 02:57:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53286 states. [2020-10-14 02:57:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53286 states to 53286 states and 67619 transitions. [2020-10-14 02:57:50,893 INFO L78 Accepts]: Start accepts. Automaton has 53286 states and 67619 transitions. Word has length 229 [2020-10-14 02:57:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:50,894 INFO L479 AbstractCegarLoop]: Abstraction has 53286 states and 67619 transitions. [2020-10-14 02:57:50,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:57:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 53286 states and 67619 transitions. [2020-10-14 02:57:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 02:57:50,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:50,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:57:50,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:57:50,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:50,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1337583370, now seen corresponding path program 1 times [2020-10-14 02:57:50,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:50,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952427917] [2020-10-14 02:57:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 02:57:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:57:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1619 [2020-10-14 02:57:52,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:52,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 02:57:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:57:52,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:57:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:52,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:52,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:52,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 02:57:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 02:57:52,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:52,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 02:57:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:57:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:53,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952427917] [2020-10-14 02:57:53,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:53,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:57:53,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567370713] [2020-10-14 02:57:53,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:53,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:53,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:53,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:53,118 INFO L87 Difference]: Start difference. First operand 53286 states and 67619 transitions. Second operand 5 states. [2020-10-14 02:58:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:11,376 INFO L93 Difference]: Finished difference Result 143850 states and 187596 transitions. [2020-10-14 02:58:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:11,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-14 02:58:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:11,739 INFO L225 Difference]: With dead ends: 143850 [2020-10-14 02:58:11,740 INFO L226 Difference]: Without dead ends: 90574 [2020-10-14 02:58:11,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:58:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90574 states. [2020-10-14 02:58:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90574 to 88250. [2020-10-14 02:58:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88250 states. [2020-10-14 02:58:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88250 states to 88250 states and 113351 transitions. [2020-10-14 02:58:13,633 INFO L78 Accepts]: Start accepts. Automaton has 88250 states and 113351 transitions. Word has length 229 [2020-10-14 02:58:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:13,633 INFO L479 AbstractCegarLoop]: Abstraction has 88250 states and 113351 transitions. [2020-10-14 02:58:13,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:58:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 88250 states and 113351 transitions. [2020-10-14 02:58:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 02:58:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:13,649 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:58:13,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:58:13,649 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash 769544662, now seen corresponding path program 1 times [2020-10-14 02:58:13,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:13,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797342251] [2020-10-14 02:58:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:16,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:16,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 02:58:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:58:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2664 [2020-10-14 02:58:16,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:16,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 02:58:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 02:58:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:16,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:58:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:16,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:16,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:58:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:58:16,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:16,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:58:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:16,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:58:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:58:16,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:16,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:58:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:58:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 02:58:16,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797342251] [2020-10-14 02:58:16,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:16,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:58:16,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838430405] [2020-10-14 02:58:16,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:58:16,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:16,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:58:16,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:58:16,891 INFO L87 Difference]: Start difference. First operand 88250 states and 113351 transitions. Second operand 5 states. [2020-10-14 02:58:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:35,687 INFO L93 Difference]: Finished difference Result 195907 states and 256769 transitions. [2020-10-14 02:58:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:35,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 02:58:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:36,092 INFO L225 Difference]: With dead ends: 195907 [2020-10-14 02:58:36,092 INFO L226 Difference]: Without dead ends: 107667 [2020-10-14 02:58:36,275 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 02:58:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107667 states. [2020-10-14 02:58:40,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107667 to 103056. [2020-10-14 02:58:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103056 states. [2020-10-14 02:58:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103056 states to 103056 states and 129092 transitions. [2020-10-14 02:58:41,026 INFO L78 Accepts]: Start accepts. Automaton has 103056 states and 129092 transitions. Word has length 237 [2020-10-14 02:58:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:41,026 INFO L479 AbstractCegarLoop]: Abstraction has 103056 states and 129092 transitions. [2020-10-14 02:58:41,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:58:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 103056 states and 129092 transitions. [2020-10-14 02:58:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-14 02:58:41,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:41,245 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:41,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:58:41,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:41,246 INFO L82 PathProgramCache]: Analyzing trace with hash 136972299, now seen corresponding path program 1 times [2020-10-14 02:58:41,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:41,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805455002] [2020-10-14 02:58:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:46,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:58:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 600 [2020-10-14 02:58:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:58:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:46,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:58:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:46,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:58:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:58:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 02:58:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:46,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:58:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:58:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-14 02:58:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1941 [2020-10-14 02:58:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:58:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:58:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 604 [2020-10-14 02:58:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:58:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 02:58:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-14 02:58:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:49,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:58:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:58:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-14 02:58:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:58:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:58:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 02:58:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:50,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:58:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:58:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:58:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:58:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:58:51,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805455002] [2020-10-14 02:58:51,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:51,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:58:51,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619477775] [2020-10-14 02:58:51,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:58:51,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:58:51,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:58:51,294 INFO L87 Difference]: Start difference. First operand 103056 states and 129092 transitions. Second operand 7 states.