/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/systemc/toy1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:18:06,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:18:06,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:18:06,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:18:06,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:18:06,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:18:06,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:18:06,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:18:06,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:18:06,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:18:06,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:18:06,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:18:06,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:18:06,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:18:06,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:18:06,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:18:06,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:18:06,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:18:06,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:18:06,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:18:06,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:18:06,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:18:06,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:18:06,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:18:06,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:18:06,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:18:06,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:18:06,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:18:06,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:18:06,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:18:06,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:18:06,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:18:06,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:18:06,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:18:06,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:18:06,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:18:06,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:18:06,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:18:06,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:18:06,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:18:06,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:18:06,993 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 10:18:07,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:18:07,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:18:07,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:18:07,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:18:07,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:18:07,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:18:07,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:18:07,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:18:07,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:18:07,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:18:07,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:18:07,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:18:07,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:18:07,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:18:07,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:18:07,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:18:07,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:18:07,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:18:07,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:18:07,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:18:07,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:18:07,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:18:07,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:18:07,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:18:07,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:18:07,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:18:07,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:18:07,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:18:07,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:18:07,041 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 10:18:07,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:18:07,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:18:07,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:18:07,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:18:07,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:18:07,377 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-14 10:18:07,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b116e66/e43e9b70cc8842ac881ea8ebcc595675/FLAG0a10d93af [2020-10-14 10:18:07,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:18:07,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-14 10:18:07,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b116e66/e43e9b70cc8842ac881ea8ebcc595675/FLAG0a10d93af [2020-10-14 10:18:08,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b116e66/e43e9b70cc8842ac881ea8ebcc595675 [2020-10-14 10:18:08,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:18:08,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:18:08,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:18:08,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:18:08,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:18:08,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb0d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08, skipping insertion in model container [2020-10-14 10:18:08,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:18:08,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:18:08,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:18:08,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:18:08,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:18:08,677 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:18:08,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08 WrapperNode [2020-10-14 10:18:08,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:18:08,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:18:08,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:18:08,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:18:08,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (1/1) ... [2020-10-14 10:18:08,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:18:08,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:18:08,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:18:08,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:18:08,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (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 10:18:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-14 10:18:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-14 10:18:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-14 10:18:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:18:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:18:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:18:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-14 10:18:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-14 10:18:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-14 10:18:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:18:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:18:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:18:09,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:18:09,539 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 10:18:09,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:09 BoogieIcfgContainer [2020-10-14 10:18:09,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:18:09,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:18:09,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:18:09,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:18:09,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:18:08" (1/3) ... [2020-10-14 10:18:09,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a9494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:09, skipping insertion in model container [2020-10-14 10:18:09,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:08" (2/3) ... [2020-10-14 10:18:09,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a9494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:09, skipping insertion in model container [2020-10-14 10:18:09,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:09" (3/3) ... [2020-10-14 10:18:09,557 INFO L109 eAbstractionObserver]: Analyzing ICFG toy1.cil.c [2020-10-14 10:18:09,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:18:09,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:18:09,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:18:09,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:18:09,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:18:09,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:18:09,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:18:09,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:18:09,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:18:09,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:18:09,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:18:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-14 10:18:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:09,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:09,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:09,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash -854031758, now seen corresponding path program 1 times [2020-10-14 10:18:09,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:09,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221584759] [2020-10-14 10:18:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:14,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:14,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:14,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:18:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4573 [2020-10-14 10:18:14,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:14,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:18:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:18:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:14,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:18:14,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:14,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:14,699 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 10:18:14,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221584759] [2020-10-14 10:18:14,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:14,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:14,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220659068] [2020-10-14 10:18:14,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:14,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:14,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:14,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:14,729 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-14 10:18:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:15,562 INFO L93 Difference]: Finished difference Result 330 states and 571 transitions. [2020-10-14 10:18:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:15,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:15,579 INFO L225 Difference]: With dead ends: 330 [2020-10-14 10:18:15,579 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 10:18:15,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 10:18:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 152. [2020-10-14 10:18:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 10:18:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 246 transitions. [2020-10-14 10:18:15,648 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 246 transitions. Word has length 47 [2020-10-14 10:18:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:15,649 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 246 transitions. [2020-10-14 10:18:15,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 246 transitions. [2020-10-14 10:18:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:15,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:15,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:15,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:18:15,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:15,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1196952240, now seen corresponding path program 1 times [2020-10-14 10:18:15,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:15,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901981549] [2020-10-14 10:18:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:18,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:18,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:18:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-14 10:18:18,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:18,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:18:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:18,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:18,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:18,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:18,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:18,695 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 10:18:18,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901981549] [2020-10-14 10:18:18,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:18,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:18,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534184290] [2020-10-14 10:18:18,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:18,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:18,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:18,703 INFO L87 Difference]: Start difference. First operand 152 states and 246 transitions. Second operand 4 states. [2020-10-14 10:18:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:19,384 INFO L93 Difference]: Finished difference Result 316 states and 515 transitions. [2020-10-14 10:18:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:19,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:19,387 INFO L225 Difference]: With dead ends: 316 [2020-10-14 10:18:19,389 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 10:18:19,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 10:18:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 152. [2020-10-14 10:18:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 10:18:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 245 transitions. [2020-10-14 10:18:19,436 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 245 transitions. Word has length 47 [2020-10-14 10:18:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:19,437 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 245 transitions. [2020-10-14 10:18:19,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 245 transitions. [2020-10-14 10:18:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:19,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:19,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:19,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:18:19,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:19,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1591319026, now seen corresponding path program 1 times [2020-10-14 10:18:19,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:19,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703940995] [2020-10-14 10:18:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:21,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:21,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:18:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 10:18:21,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:21,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:18:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:18:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:21,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:21,648 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 10:18:21,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703940995] [2020-10-14 10:18:21,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:21,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:21,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623702062] [2020-10-14 10:18:21,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:21,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:21,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:21,651 INFO L87 Difference]: Start difference. First operand 152 states and 245 transitions. Second operand 4 states. [2020-10-14 10:18:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:22,335 INFO L93 Difference]: Finished difference Result 184 states and 293 transitions. [2020-10-14 10:18:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:18:22,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:22,340 INFO L225 Difference]: With dead ends: 184 [2020-10-14 10:18:22,340 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 10:18:22,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 10:18:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 153. [2020-10-14 10:18:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 10:18:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 246 transitions. [2020-10-14 10:18:22,369 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 246 transitions. Word has length 47 [2020-10-14 10:18:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:22,369 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 246 transitions. [2020-10-14 10:18:22,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 246 transitions. [2020-10-14 10:18:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:22,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:22,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:22,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:18:22,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1591371819, now seen corresponding path program 1 times [2020-10-14 10:18:22,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:22,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537820507] [2020-10-14 10:18:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:23,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:18:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-14 10:18:23,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:23,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:18:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:23,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:23,570 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 10:18:23,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537820507] [2020-10-14 10:18:23,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:23,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:23,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212383633] [2020-10-14 10:18:23,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:23,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:23,573 INFO L87 Difference]: Start difference. First operand 153 states and 246 transitions. Second operand 4 states. [2020-10-14 10:18:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:24,511 INFO L93 Difference]: Finished difference Result 451 states and 729 transitions. [2020-10-14 10:18:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:24,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:24,515 INFO L225 Difference]: With dead ends: 451 [2020-10-14 10:18:24,515 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 10:18:24,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 10:18:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2020-10-14 10:18:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 10:18:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 453 transitions. [2020-10-14 10:18:24,552 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 453 transitions. Word has length 47 [2020-10-14 10:18:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:24,553 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 453 transitions. [2020-10-14 10:18:24,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 453 transitions. [2020-10-14 10:18:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:24,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:24,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:24,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:18:24,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 983430507, now seen corresponding path program 1 times [2020-10-14 10:18:24,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034486126] [2020-10-14 10:18:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-14 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:18:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:25,801 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 10:18:25,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034486126] [2020-10-14 10:18:25,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:25,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:25,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22026611] [2020-10-14 10:18:25,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:25,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:25,804 INFO L87 Difference]: Start difference. First operand 282 states and 453 transitions. Second operand 4 states. [2020-10-14 10:18:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:26,422 INFO L93 Difference]: Finished difference Result 597 states and 961 transitions. [2020-10-14 10:18:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:26,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:26,426 INFO L225 Difference]: With dead ends: 597 [2020-10-14 10:18:26,426 INFO L226 Difference]: Without dead ends: 335 [2020-10-14 10:18:26,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-14 10:18:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 304. [2020-10-14 10:18:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-14 10:18:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 487 transitions. [2020-10-14 10:18:26,476 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 487 transitions. Word has length 47 [2020-10-14 10:18:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:26,476 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 487 transitions. [2020-10-14 10:18:26,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 487 transitions. [2020-10-14 10:18:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:26,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:26,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:26,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:18:26,478 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1006062761, now seen corresponding path program 1 times [2020-10-14 10:18:26,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:26,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447123034] [2020-10-14 10:18:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:27,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:18:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:27,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:27,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:27,831 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 10:18:27,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447123034] [2020-10-14 10:18:27,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:27,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:27,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26882825] [2020-10-14 10:18:27,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:27,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:27,834 INFO L87 Difference]: Start difference. First operand 304 states and 487 transitions. Second operand 4 states. [2020-10-14 10:18:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:28,464 INFO L93 Difference]: Finished difference Result 645 states and 1046 transitions. [2020-10-14 10:18:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:28,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:28,471 INFO L225 Difference]: With dead ends: 645 [2020-10-14 10:18:28,472 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 10:18:28,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 10:18:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 352. [2020-10-14 10:18:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2020-10-14 10:18:28,518 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 47 [2020-10-14 10:18:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:28,521 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2020-10-14 10:18:28,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2020-10-14 10:18:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:28,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:28,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:28,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:18:28,525 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1806647981, now seen corresponding path program 1 times [2020-10-14 10:18:28,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:28,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943019801] [2020-10-14 10:18:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:18:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:18:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:18:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:29,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:29,575 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 10:18:29,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943019801] [2020-10-14 10:18:29,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:29,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:29,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397806642] [2020-10-14 10:18:29,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:29,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:29,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:29,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:29,579 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand 4 states. [2020-10-14 10:18:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:30,225 INFO L93 Difference]: Finished difference Result 707 states and 1151 transitions. [2020-10-14 10:18:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:30,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:30,229 INFO L225 Difference]: With dead ends: 707 [2020-10-14 10:18:30,229 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 10:18:30,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 10:18:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 352. [2020-10-14 10:18:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 567 transitions. [2020-10-14 10:18:30,258 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 567 transitions. Word has length 47 [2020-10-14 10:18:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:30,258 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 567 transitions. [2020-10-14 10:18:30,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 567 transitions. [2020-10-14 10:18:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:30,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:30,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:30,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:18:30,260 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1786719441, now seen corresponding path program 1 times [2020-10-14 10:18:30,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:30,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594415928] [2020-10-14 10:18:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:31,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:31,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:31,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:18:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:31,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:31,346 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 10:18:31,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594415928] [2020-10-14 10:18:31,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:31,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:31,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371124596] [2020-10-14 10:18:31,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:31,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:31,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:31,348 INFO L87 Difference]: Start difference. First operand 352 states and 567 transitions. Second operand 4 states. [2020-10-14 10:18:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:31,990 INFO L93 Difference]: Finished difference Result 697 states and 1124 transitions. [2020-10-14 10:18:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:31,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:31,994 INFO L225 Difference]: With dead ends: 697 [2020-10-14 10:18:31,994 INFO L226 Difference]: Without dead ends: 385 [2020-10-14 10:18:31,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-14 10:18:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 352. [2020-10-14 10:18:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 555 transitions. [2020-10-14 10:18:32,020 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 555 transitions. Word has length 47 [2020-10-14 10:18:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:32,021 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 555 transitions. [2020-10-14 10:18:32,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 555 transitions. [2020-10-14 10:18:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:32,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:32,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:32,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:18:32,023 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1567864723, now seen corresponding path program 1 times [2020-10-14 10:18:32,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:32,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566451949] [2020-10-14 10:18:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:32,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:32,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:18:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-14 10:18:32,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:32,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:18:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:33,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:33,006 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 10:18:33,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566451949] [2020-10-14 10:18:33,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:33,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:33,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798386489] [2020-10-14 10:18:33,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:33,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:33,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:33,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:33,009 INFO L87 Difference]: Start difference. First operand 352 states and 555 transitions. Second operand 4 states. [2020-10-14 10:18:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:33,581 INFO L93 Difference]: Finished difference Result 709 states and 1119 transitions. [2020-10-14 10:18:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:33,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:33,584 INFO L225 Difference]: With dead ends: 709 [2020-10-14 10:18:33,584 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 10:18:33,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 10:18:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 352. [2020-10-14 10:18:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 549 transitions. [2020-10-14 10:18:33,611 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 549 transitions. Word has length 47 [2020-10-14 10:18:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:33,611 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 549 transitions. [2020-10-14 10:18:33,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 549 transitions. [2020-10-14 10:18:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:33,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:33,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:33,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:18:33,612 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:33,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1293105109, now seen corresponding path program 1 times [2020-10-14 10:18:33,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:33,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277071989] [2020-10-14 10:18:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:34,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:18:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-10-14 10:18:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:34,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:18:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:34,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:34,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:34,700 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 10:18:34,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277071989] [2020-10-14 10:18:34,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:34,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:34,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785058473] [2020-10-14 10:18:34,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:34,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:34,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:34,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:34,702 INFO L87 Difference]: Start difference. First operand 352 states and 549 transitions. Second operand 4 states. [2020-10-14 10:18:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:35,349 INFO L93 Difference]: Finished difference Result 687 states and 1070 transitions. [2020-10-14 10:18:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:35,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:35,353 INFO L225 Difference]: With dead ends: 687 [2020-10-14 10:18:35,353 INFO L226 Difference]: Without dead ends: 387 [2020-10-14 10:18:35,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-14 10:18:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 352. [2020-10-14 10:18:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 537 transitions. [2020-10-14 10:18:35,379 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 537 transitions. Word has length 47 [2020-10-14 10:18:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:35,379 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 537 transitions. [2020-10-14 10:18:35,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 537 transitions. [2020-10-14 10:18:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:35,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:35,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:18:35,381 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2110753559, now seen corresponding path program 1 times [2020-10-14 10:18:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:35,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771137379] [2020-10-14 10:18:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:36,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:18:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:36,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:36,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:36,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:36,123 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 10:18:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771137379] [2020-10-14 10:18:36,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:36,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:36,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901088702] [2020-10-14 10:18:36,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:36,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:36,125 INFO L87 Difference]: Start difference. First operand 352 states and 537 transitions. Second operand 4 states. [2020-10-14 10:18:36,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:36,679 INFO L93 Difference]: Finished difference Result 711 states and 1087 transitions. [2020-10-14 10:18:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:36,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 10:18:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:36,683 INFO L225 Difference]: With dead ends: 711 [2020-10-14 10:18:36,683 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 10:18:36,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 10:18:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 352. [2020-10-14 10:18:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 10:18:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 513 transitions. [2020-10-14 10:18:36,718 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 513 transitions. Word has length 47 [2020-10-14 10:18:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:36,718 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 513 transitions. [2020-10-14 10:18:36,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 513 transitions. [2020-10-14 10:18:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:18:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:36,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:36,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:18:36,720 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1760438291, now seen corresponding path program 1 times [2020-10-14 10:18:36,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:36,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139583382] [2020-10-14 10:18:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:37,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:18:37,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:18:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-14 10:18:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:18:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:18:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-14 10:18:37,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:37,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:37,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:37,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:37,332 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 10:18:37,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139583382] [2020-10-14 10:18:37,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:37,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:18:37,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251045406] [2020-10-14 10:18:37,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:18:37,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:18:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:37,335 INFO L87 Difference]: Start difference. First operand 352 states and 513 transitions. Second operand 5 states. [2020-10-14 10:18:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:38,369 INFO L93 Difference]: Finished difference Result 1123 states and 1689 transitions. [2020-10-14 10:18:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:18:38,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-14 10:18:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:38,383 INFO L225 Difference]: With dead ends: 1123 [2020-10-14 10:18:38,383 INFO L226 Difference]: Without dead ends: 805 [2020-10-14 10:18:38,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-14 10:18:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 741. [2020-10-14 10:18:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-14 10:18:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1097 transitions. [2020-10-14 10:18:38,455 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1097 transitions. Word has length 47 [2020-10-14 10:18:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:38,457 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 1097 transitions. [2020-10-14 10:18:38,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:18:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1097 transitions. [2020-10-14 10:18:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 10:18:38,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:38,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:18:38,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:18:38,460 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1168950296, now seen corresponding path program 1 times [2020-10-14 10:18:38,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:38,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238065277] [2020-10-14 10:18:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 10:18:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:18:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:18:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:43,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:18:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:18:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:43,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:43,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:43,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:18:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:18:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:43,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:18:43,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:18:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 10:18:43,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238065277] [2020-10-14 10:18:43,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:18:43,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 10:18:43,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300066287] [2020-10-14 10:18:43,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:18:43,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:18:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:43,633 INFO L87 Difference]: Start difference. First operand 741 states and 1097 transitions. Second operand 5 states. [2020-10-14 10:18:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:44,945 INFO L93 Difference]: Finished difference Result 2403 states and 3689 transitions. [2020-10-14 10:18:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:18:44,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-14 10:18:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:44,956 INFO L225 Difference]: With dead ends: 2403 [2020-10-14 10:18:44,956 INFO L226 Difference]: Without dead ends: 1371 [2020-10-14 10:18:44,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-10-14 10:18:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1226. [2020-10-14 10:18:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-10-14 10:18:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1856 transitions. [2020-10-14 10:18:45,091 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1856 transitions. Word has length 81 [2020-10-14 10:18:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:45,093 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1856 transitions. [2020-10-14 10:18:45,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:18:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1856 transitions. [2020-10-14 10:18:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 10:18:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:45,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:45,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:18:45,101 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:45,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487925, now seen corresponding path program 1 times [2020-10-14 10:18:45,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:45,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247280939] [2020-10-14 10:18:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 10:18:50,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:18:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:18:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 10:18:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:18:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:18:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:50,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 10:18:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:18:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 10:18:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:18:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 10:18:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:18:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:18:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:18:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:18:50,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247280939] [2020-10-14 10:18:50,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:18:50,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 10:18:50,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377841932] [2020-10-14 10:18:50,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:18:50,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:50,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:18:50,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:18:50,294 INFO L87 Difference]: Start difference. First operand 1226 states and 1856 transitions. Second operand 6 states. [2020-10-14 10:18:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:51,712 INFO L93 Difference]: Finished difference Result 4072 states and 6411 transitions. [2020-10-14 10:18:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:18:51,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-14 10:18:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:51,730 INFO L225 Difference]: With dead ends: 4072 [2020-10-14 10:18:51,730 INFO L226 Difference]: Without dead ends: 2897 [2020-10-14 10:18:51,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:18:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-10-14 10:18:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2309. [2020-10-14 10:18:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-10-14 10:18:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3471 transitions. [2020-10-14 10:18:51,967 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3471 transitions. Word has length 98 [2020-10-14 10:18:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:51,968 INFO L479 AbstractCegarLoop]: Abstraction has 2309 states and 3471 transitions. [2020-10-14 10:18:51,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:18:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3471 transitions. [2020-10-14 10:18:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 10:18:51,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:51,981 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:18:51,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:18:51,982 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:51,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:51,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1758247661, now seen corresponding path program 1 times [2020-10-14 10:18:51,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:51,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213198732] [2020-10-14 10:18:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 10:18:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:18:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:18:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 10:18:57,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:18:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:18:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:18:57,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:57,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:18:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:18:57,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:18:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:18:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:18:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 10:18:57,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213198732] [2020-10-14 10:18:57,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:18:57,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 10:18:57,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26593706] [2020-10-14 10:18:57,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:18:57,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:18:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:57,297 INFO L87 Difference]: Start difference. First operand 2309 states and 3471 transitions. Second operand 7 states. [2020-10-14 10:18:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:58,880 INFO L93 Difference]: Finished difference Result 5994 states and 9348 transitions. [2020-10-14 10:18:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:18:58,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-14 10:18:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:58,901 INFO L225 Difference]: With dead ends: 5994 [2020-10-14 10:18:58,902 INFO L226 Difference]: Without dead ends: 3737 [2020-10-14 10:18:58,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:18:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-10-14 10:18:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2843. [2020-10-14 10:18:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2843 states. [2020-10-14 10:18:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4294 transitions. [2020-10-14 10:18:59,159 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4294 transitions. Word has length 124 [2020-10-14 10:18:59,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:59,159 INFO L479 AbstractCegarLoop]: Abstraction has 2843 states and 4294 transitions. [2020-10-14 10:18:59,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:18:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4294 transitions. [2020-10-14 10:18:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 10:18:59,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:59,169 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:18:59,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:18:59,170 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:59,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:59,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1218859041, now seen corresponding path program 1 times [2020-10-14 10:18:59,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:59,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448218045] [2020-10-14 10:18:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 10:19:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:19:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:19:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:19:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 10:19:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:19:04,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:19:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:19:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:19:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:19:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:04,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:19:04,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448218045] [2020-10-14 10:19:04,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:04,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:04,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920898598] [2020-10-14 10:19:04,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:04,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:04,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:04,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:04,444 INFO L87 Difference]: Start difference. First operand 2843 states and 4294 transitions. Second operand 8 states. [2020-10-14 10:19:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:05,990 INFO L93 Difference]: Finished difference Result 8463 states and 13003 transitions. [2020-10-14 10:19:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:19:05,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-14 10:19:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:06,024 INFO L225 Difference]: With dead ends: 8463 [2020-10-14 10:19:06,024 INFO L226 Difference]: Without dead ends: 5629 [2020-10-14 10:19:06,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:19:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2020-10-14 10:19:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 4485. [2020-10-14 10:19:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4485 states. [2020-10-14 10:19:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6902 transitions. [2020-10-14 10:19:06,550 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6902 transitions. Word has length 124 [2020-10-14 10:19:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:06,550 INFO L479 AbstractCegarLoop]: Abstraction has 4485 states and 6902 transitions. [2020-10-14 10:19:06,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6902 transitions. [2020-10-14 10:19:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:19:06,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:06,563 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:06,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:19:06,564 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash 343915868, now seen corresponding path program 1 times [2020-10-14 10:19:06,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:06,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440588581] [2020-10-14 10:19:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:19:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:19:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:19:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 10:19:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 10:19:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:19:11,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440588581] [2020-10-14 10:19:11,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:11,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:11,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601757836] [2020-10-14 10:19:11,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:11,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:11,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:11,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:11,831 INFO L87 Difference]: Start difference. First operand 4485 states and 6902 transitions. Second operand 8 states. [2020-10-14 10:19:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:13,677 INFO L93 Difference]: Finished difference Result 11184 states and 17864 transitions. [2020-10-14 10:19:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:19:13,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-14 10:19:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:13,720 INFO L225 Difference]: With dead ends: 11184 [2020-10-14 10:19:13,721 INFO L226 Difference]: Without dead ends: 6732 [2020-10-14 10:19:13,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-14 10:19:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2020-10-14 10:19:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 5199. [2020-10-14 10:19:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2020-10-14 10:19:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7904 transitions. [2020-10-14 10:19:14,205 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7904 transitions. Word has length 133 [2020-10-14 10:19:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:14,206 INFO L479 AbstractCegarLoop]: Abstraction has 5199 states and 7904 transitions. [2020-10-14 10:19:14,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7904 transitions. [2020-10-14 10:19:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 10:19:14,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:14,220 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:14,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:19:14,220 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:14,220 INFO L82 PathProgramCache]: Analyzing trace with hash -182864537, now seen corresponding path program 1 times [2020-10-14 10:19:14,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:14,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820374543] [2020-10-14 10:19:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:14,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:19:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 10:19:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 10:19:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:19:19,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:19:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 10:19:19,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:19:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:19:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:19:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:19,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:19:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:19:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:19:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 10:19:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 10:19:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:19,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 10:19:19,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820374543] [2020-10-14 10:19:19,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:19:19,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:19:19,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002302885] [2020-10-14 10:19:19,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:19:19,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:19:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:19:19,612 INFO L87 Difference]: Start difference. First operand 5199 states and 7904 transitions. Second operand 11 states. [2020-10-14 10:19:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:23,873 INFO L93 Difference]: Finished difference Result 22253 states and 36327 transitions. [2020-10-14 10:19:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 10:19:23,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-14 10:19:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:23,981 INFO L225 Difference]: With dead ends: 22253 [2020-10-14 10:19:23,981 INFO L226 Difference]: Without dead ends: 17093 [2020-10-14 10:19:24,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 10:19:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17093 states. [2020-10-14 10:19:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17093 to 11798. [2020-10-14 10:19:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11798 states. [2020-10-14 10:19:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11798 states to 11798 states and 18295 transitions. [2020-10-14 10:19:25,209 INFO L78 Accepts]: Start accepts. Automaton has 11798 states and 18295 transitions. Word has length 134 [2020-10-14 10:19:25,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:25,210 INFO L479 AbstractCegarLoop]: Abstraction has 11798 states and 18295 transitions. [2020-10-14 10:19:25,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:19:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11798 states and 18295 transitions. [2020-10-14 10:19:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 10:19:25,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:25,252 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:25,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:19:25,252 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:25,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1060124014, now seen corresponding path program 1 times [2020-10-14 10:19:25,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:25,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503088275] [2020-10-14 10:19:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 10:19:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:19:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:19:30,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:19:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:19:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:19:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:19:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:19:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 10:19:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:30,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:30,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:19:30,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503088275] [2020-10-14 10:19:30,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:30,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:19:30,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67263683] [2020-10-14 10:19:30,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:19:30,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:30,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:19:30,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:19:30,548 INFO L87 Difference]: Start difference. First operand 11798 states and 18295 transitions. Second operand 9 states. [2020-10-14 10:19:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:34,386 INFO L93 Difference]: Finished difference Result 29109 states and 46570 transitions. [2020-10-14 10:19:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 10:19:34,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-10-14 10:19:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:34,463 INFO L225 Difference]: With dead ends: 29109 [2020-10-14 10:19:34,464 INFO L226 Difference]: Without dead ends: 17350 [2020-10-14 10:19:34,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-14 10:19:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17350 states. [2020-10-14 10:19:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17350 to 12481. [2020-10-14 10:19:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12481 states. [2020-10-14 10:19:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12481 states to 12481 states and 19271 transitions. [2020-10-14 10:19:36,579 INFO L78 Accepts]: Start accepts. Automaton has 12481 states and 19271 transitions. Word has length 141 [2020-10-14 10:19:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:36,580 INFO L479 AbstractCegarLoop]: Abstraction has 12481 states and 19271 transitions. [2020-10-14 10:19:36,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:19:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12481 states and 19271 transitions. [2020-10-14 10:19:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 10:19:36,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:36,607 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:36,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:19:36,608 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1527429277, now seen corresponding path program 1 times [2020-10-14 10:19:36,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:36,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077359296] [2020-10-14 10:19:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 10:19:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:19:41,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:19:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:19:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:19:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:41,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 10:19:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:19:41,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:19:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 10:19:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:41,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:19:41,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077359296] [2020-10-14 10:19:41,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:19:41,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:19:41,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613834054] [2020-10-14 10:19:41,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:19:41,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:41,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:19:41,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:19:41,880 INFO L87 Difference]: Start difference. First operand 12481 states and 19271 transitions. Second operand 9 states. [2020-10-14 10:19:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:44,284 INFO L93 Difference]: Finished difference Result 28015 states and 44260 transitions. [2020-10-14 10:19:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:19:44,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-10-14 10:19:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:44,345 INFO L225 Difference]: With dead ends: 28015 [2020-10-14 10:19:44,345 INFO L226 Difference]: Without dead ends: 17078 [2020-10-14 10:19:44,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:19:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2020-10-14 10:19:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 12133. [2020-10-14 10:19:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12133 states. [2020-10-14 10:19:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 18570 transitions. [2020-10-14 10:19:45,661 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 18570 transitions. Word has length 146 [2020-10-14 10:19:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:45,662 INFO L479 AbstractCegarLoop]: Abstraction has 12133 states and 18570 transitions. [2020-10-14 10:19:45,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:19:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 18570 transitions. [2020-10-14 10:19:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 10:19:45,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:45,686 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:45,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:19:45,686 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2132540190, now seen corresponding path program 1 times [2020-10-14 10:19:45,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:45,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232623353] [2020-10-14 10:19:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:19:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:19:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:19:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 10:19:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:19:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:19:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:19:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:19:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:50,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 10:19:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:19:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 10:19:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:19:50,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232623353] [2020-10-14 10:19:50,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:50,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:19:50,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825146812] [2020-10-14 10:19:50,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:19:50,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:19:50,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:19:50,977 INFO L87 Difference]: Start difference. First operand 12133 states and 18570 transitions. Second operand 9 states. [2020-10-14 10:19:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:56,299 INFO L93 Difference]: Finished difference Result 28943 states and 44896 transitions. [2020-10-14 10:19:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 10:19:56,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-10-14 10:19:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:56,381 INFO L225 Difference]: With dead ends: 28943 [2020-10-14 10:19:56,381 INFO L226 Difference]: Without dead ends: 17069 [2020-10-14 10:19:56,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-10-14 10:19:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17069 states. [2020-10-14 10:19:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17069 to 12132. [2020-10-14 10:19:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12132 states. [2020-10-14 10:19:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12132 states to 12132 states and 18562 transitions. [2020-10-14 10:19:57,618 INFO L78 Accepts]: Start accepts. Automaton has 12132 states and 18562 transitions. Word has length 147 [2020-10-14 10:19:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:57,619 INFO L479 AbstractCegarLoop]: Abstraction has 12132 states and 18562 transitions. [2020-10-14 10:19:57,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:19:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12132 states and 18562 transitions. [2020-10-14 10:19:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 10:19:57,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:57,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:57,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:19:57,636 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash -82564803, now seen corresponding path program 1 times [2020-10-14 10:19:57,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:57,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312452192] [2020-10-14 10:19:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 10:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 10:20:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:20:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 10:20:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:02,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:20:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:20:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:02,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 10:20:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 10:20:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:02,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 10:20:02,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312452192] [2020-10-14 10:20:02,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:20:02,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:20:02,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998415831] [2020-10-14 10:20:02,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:20:02,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:20:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:20:02,965 INFO L87 Difference]: Start difference. First operand 12132 states and 18562 transitions. Second operand 11 states. [2020-10-14 10:20:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:09,165 INFO L93 Difference]: Finished difference Result 54164 states and 88100 transitions. [2020-10-14 10:20:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 10:20:09,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-10-14 10:20:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:09,390 INFO L225 Difference]: With dead ends: 54164 [2020-10-14 10:20:09,390 INFO L226 Difference]: Without dead ends: 42078 [2020-10-14 10:20:09,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=380, Invalid=1782, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 10:20:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42078 states. [2020-10-14 10:20:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42078 to 29043. [2020-10-14 10:20:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29043 states. [2020-10-14 10:20:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29043 states to 29043 states and 43939 transitions. [2020-10-14 10:20:11,967 INFO L78 Accepts]: Start accepts. Automaton has 29043 states and 43939 transitions. Word has length 144 [2020-10-14 10:20:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:11,968 INFO L479 AbstractCegarLoop]: Abstraction has 29043 states and 43939 transitions. [2020-10-14 10:20:11,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:20:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 29043 states and 43939 transitions. [2020-10-14 10:20:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 10:20:12,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:12,032 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2020-10-14 10:20:12,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:20:12,032 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1813748027, now seen corresponding path program 1 times [2020-10-14 10:20:12,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:12,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318105891] [2020-10-14 10:20:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 10:20:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 10:20:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 10:20:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:17,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:17,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:17,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:20:17,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:20:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:17,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:17,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:20:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:17,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:20:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:17,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:17,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 10:20:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:17,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 10:20:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:17,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:17,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318105891] [2020-10-14 10:20:17,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:17,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:20:17,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524491861] [2020-10-14 10:20:17,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:17,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:17,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:17,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:17,371 INFO L87 Difference]: Start difference. First operand 29043 states and 43939 transitions. Second operand 9 states. [2020-10-14 10:20:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:22,087 INFO L93 Difference]: Finished difference Result 49734 states and 75567 transitions. [2020-10-14 10:20:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 10:20:22,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-10-14 10:20:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:22,155 INFO L225 Difference]: With dead ends: 49734 [2020-10-14 10:20:22,156 INFO L226 Difference]: Without dead ends: 21265 [2020-10-14 10:20:22,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-10-14 10:20:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21265 states. [2020-10-14 10:20:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21265 to 17285. [2020-10-14 10:20:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17285 states. [2020-10-14 10:20:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17285 states to 17285 states and 24925 transitions. [2020-10-14 10:20:23,507 INFO L78 Accepts]: Start accepts. Automaton has 17285 states and 24925 transitions. Word has length 148 [2020-10-14 10:20:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:23,508 INFO L479 AbstractCegarLoop]: Abstraction has 17285 states and 24925 transitions. [2020-10-14 10:20:23,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 17285 states and 24925 transitions. [2020-10-14 10:20:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 10:20:23,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:23,529 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:20:23,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:20:23,530 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1700005253, now seen corresponding path program 1 times [2020-10-14 10:20:23,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:23,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117609547] [2020-10-14 10:20:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:20:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:20:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 10:20:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:20:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:26,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:26,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:26,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:26,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 10:20:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 10:20:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:20:26,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117609547] [2020-10-14 10:20:26,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:26,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:20:26,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809153189] [2020-10-14 10:20:26,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:26,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:26,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:26,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:26,430 INFO L87 Difference]: Start difference. First operand 17285 states and 24925 transitions. Second operand 9 states. [2020-10-14 10:20:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:29,308 INFO L93 Difference]: Finished difference Result 37379 states and 54318 transitions. [2020-10-14 10:20:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:20:29,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2020-10-14 10:20:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:29,361 INFO L225 Difference]: With dead ends: 37379 [2020-10-14 10:20:29,361 INFO L226 Difference]: Without dead ends: 20140 [2020-10-14 10:20:29,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-14 10:20:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20140 states. [2020-10-14 10:20:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20140 to 16864. [2020-10-14 10:20:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16864 states. [2020-10-14 10:20:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16864 states to 16864 states and 24354 transitions. [2020-10-14 10:20:30,554 INFO L78 Accepts]: Start accepts. Automaton has 16864 states and 24354 transitions. Word has length 144 [2020-10-14 10:20:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:30,554 INFO L479 AbstractCegarLoop]: Abstraction has 16864 states and 24354 transitions. [2020-10-14 10:20:30,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16864 states and 24354 transitions. [2020-10-14 10:20:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 10:20:30,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:30,575 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:20:30,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:20:30,575 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:30,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1273373, now seen corresponding path program 1 times [2020-10-14 10:20:30,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:30,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422859952] [2020-10-14 10:20:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 10:20:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:20:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:20:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:20:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:35,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:35,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:35,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:20:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:35,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 10:20:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:35,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:35,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:35,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:35,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 10:20:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:35,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:35,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:35,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422859952] [2020-10-14 10:20:35,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:35,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:20:35,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016558353] [2020-10-14 10:20:35,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:20:35,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:35,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:20:35,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:20:35,917 INFO L87 Difference]: Start difference. First operand 16864 states and 24354 transitions. Second operand 10 states. [2020-10-14 10:20:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:39,995 INFO L93 Difference]: Finished difference Result 35293 states and 52803 transitions. [2020-10-14 10:20:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 10:20:39,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-10-14 10:20:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:40,055 INFO L225 Difference]: With dead ends: 35293 [2020-10-14 10:20:40,055 INFO L226 Difference]: Without dead ends: 18475 [2020-10-14 10:20:40,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-10-14 10:20:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2020-10-14 10:20:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 15131. [2020-10-14 10:20:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15131 states. [2020-10-14 10:20:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 21684 transitions. [2020-10-14 10:20:41,320 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 21684 transitions. Word has length 151 [2020-10-14 10:20:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:41,320 INFO L479 AbstractCegarLoop]: Abstraction has 15131 states and 21684 transitions. [2020-10-14 10:20:41,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:20:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 21684 transitions. [2020-10-14 10:20:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 10:20:41,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:41,341 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:20:41,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:20:41,341 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 573198041, now seen corresponding path program 1 times [2020-10-14 10:20:41,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:41,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689262208] [2020-10-14 10:20:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 10:20:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 10:20:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:46,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:20:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:20:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:20:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:20:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 10:20:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:20:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:46,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 10:20:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:20:46,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:20:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 10:20:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:46,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:46,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:46,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:46,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689262208] [2020-10-14 10:20:46,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:46,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:20:46,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650688934] [2020-10-14 10:20:46,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:20:46,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:46,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:20:46,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:20:46,680 INFO L87 Difference]: Start difference. First operand 15131 states and 21684 transitions. Second operand 10 states. [2020-10-14 10:20:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:49,622 INFO L93 Difference]: Finished difference Result 24335 states and 34590 transitions. [2020-10-14 10:20:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 10:20:49,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-10-14 10:20:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:49,658 INFO L225 Difference]: With dead ends: 24335 [2020-10-14 10:20:49,658 INFO L226 Difference]: Without dead ends: 9637 [2020-10-14 10:20:49,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2020-10-14 10:20:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9637 states. [2020-10-14 10:20:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9637 to 8425. [2020-10-14 10:20:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8425 states. [2020-10-14 10:20:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 11296 transitions. [2020-10-14 10:20:50,323 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 11296 transitions. Word has length 158 [2020-10-14 10:20:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:50,323 INFO L479 AbstractCegarLoop]: Abstraction has 8425 states and 11296 transitions. [2020-10-14 10:20:50,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:20:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 11296 transitions. [2020-10-14 10:20:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 10:20:50,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:50,332 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:20:50,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:20:50,332 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:50,333 INFO L82 PathProgramCache]: Analyzing trace with hash -971455207, now seen corresponding path program 1 times [2020-10-14 10:20:50,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:50,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291949548] [2020-10-14 10:20:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:52,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 10:20:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:20:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2371 [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 10:20:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:52,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:52,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:20:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 10:20:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:52,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:52,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:20:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:53,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:20:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:20:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:20:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 10:20:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:20:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 10:20:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:53,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291949548] [2020-10-14 10:20:53,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:20:53,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 10:20:53,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54454972] [2020-10-14 10:20:53,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 10:20:53,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:53,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 10:20:53,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:20:53,127 INFO L87 Difference]: Start difference. First operand 8425 states and 11296 transitions. Second operand 12 states. [2020-10-14 10:20:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:57,789 INFO L93 Difference]: Finished difference Result 18357 states and 24738 transitions. [2020-10-14 10:20:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 10:20:57,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 154 [2020-10-14 10:20:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:57,816 INFO L225 Difference]: With dead ends: 18357 [2020-10-14 10:20:57,816 INFO L226 Difference]: Without dead ends: 10939 [2020-10-14 10:20:57,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=355, Invalid=1367, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 10:20:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2020-10-14 10:20:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 9358. [2020-10-14 10:20:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9358 states. [2020-10-14 10:20:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9358 states to 9358 states and 12425 transitions. [2020-10-14 10:20:58,528 INFO L78 Accepts]: Start accepts. Automaton has 9358 states and 12425 transitions. Word has length 154 [2020-10-14 10:20:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:58,528 INFO L479 AbstractCegarLoop]: Abstraction has 9358 states and 12425 transitions. [2020-10-14 10:20:58,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 10:20:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9358 states and 12425 transitions. [2020-10-14 10:20:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 10:20:58,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:58,536 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 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] [2020-10-14 10:20:58,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:20:58,537 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:58,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1410042016, now seen corresponding path program 1 times [2020-10-14 10:20:58,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:58,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459049143] [2020-10-14 10:20:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 10:21:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:21:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:21:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:21:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:21:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:21:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:21:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:21:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:21:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 10:21:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 10:21:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:01,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 10:21:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:01,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:01,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 10:21:01,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459049143] [2020-10-14 10:21:01,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:21:01,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:21:01,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278009226] [2020-10-14 10:21:01,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:21:01,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:01,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:21:01,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:21:01,996 INFO L87 Difference]: Start difference. First operand 9358 states and 12425 transitions. Second operand 10 states. [2020-10-14 10:21:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:04,970 INFO L93 Difference]: Finished difference Result 21389 states and 28656 transitions. [2020-10-14 10:21:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 10:21:04,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-14 10:21:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:04,999 INFO L225 Difference]: With dead ends: 21389 [2020-10-14 10:21:04,999 INFO L226 Difference]: Without dead ends: 10889 [2020-10-14 10:21:05,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2020-10-14 10:21:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10889 states. [2020-10-14 10:21:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10889 to 9352. [2020-10-14 10:21:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9352 states. [2020-10-14 10:21:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 12150 transitions. [2020-10-14 10:21:05,789 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 12150 transitions. Word has length 168 [2020-10-14 10:21:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:05,790 INFO L479 AbstractCegarLoop]: Abstraction has 9352 states and 12150 transitions. [2020-10-14 10:21:05,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:21:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 12150 transitions. [2020-10-14 10:21:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 10:21:05,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:05,798 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2020-10-14 10:21:05,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:21:05,798 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:05,798 INFO L82 PathProgramCache]: Analyzing trace with hash 746767918, now seen corresponding path program 1 times [2020-10-14 10:21:05,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:05,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709542019] [2020-10-14 10:21:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:21:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:09,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:21:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 10:21:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:21:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 10:21:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:21:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:21:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:09,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:21:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 10:21:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:21:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 10:21:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 10:21:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 10:21:09,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709542019] [2020-10-14 10:21:09,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:21:09,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 10:21:09,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543696864] [2020-10-14 10:21:09,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:21:09,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:09,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:21:09,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:21:09,867 INFO L87 Difference]: Start difference. First operand 9352 states and 12150 transitions. Second operand 10 states. [2020-10-14 10:21:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:13,806 INFO L93 Difference]: Finished difference Result 25315 states and 33163 transitions. [2020-10-14 10:21:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 10:21:13,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-10-14 10:21:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:13,848 INFO L225 Difference]: With dead ends: 25315 [2020-10-14 10:21:13,848 INFO L226 Difference]: Without dead ends: 14732 [2020-10-14 10:21:13,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-10-14 10:21:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2020-10-14 10:21:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 13870. [2020-10-14 10:21:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13870 states. [2020-10-14 10:21:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 17950 transitions. [2020-10-14 10:21:15,021 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 17950 transitions. Word has length 172 [2020-10-14 10:21:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:15,021 INFO L479 AbstractCegarLoop]: Abstraction has 13870 states and 17950 transitions. [2020-10-14 10:21:15,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:21:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 17950 transitions. [2020-10-14 10:21:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 10:21:15,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:15,029 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:21:15,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:21:15,030 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1793150605, now seen corresponding path program 1 times [2020-10-14 10:21:15,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:15,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325859284] [2020-10-14 10:21:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:21:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:21:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:21:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:21:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 10:21:16,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:21:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 10:21:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:16,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:16,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:21:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 10:21:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 10:21:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 10:21:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 10:21:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 10:21:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:16,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 10:21:16,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325859284] [2020-10-14 10:21:16,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:21:16,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:21:16,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778332329] [2020-10-14 10:21:16,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:21:16,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:21:16,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:21:16,506 INFO L87 Difference]: Start difference. First operand 13870 states and 17950 transitions. Second operand 10 states. [2020-10-14 10:21:19,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:19,475 INFO L93 Difference]: Finished difference Result 27678 states and 35769 transitions. [2020-10-14 10:21:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 10:21:19,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-14 10:21:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:19,515 INFO L225 Difference]: With dead ends: 27678 [2020-10-14 10:21:19,515 INFO L226 Difference]: Without dead ends: 14026 [2020-10-14 10:21:19,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2020-10-14 10:21:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14026 states. [2020-10-14 10:21:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14026 to 13462. [2020-10-14 10:21:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13462 states. [2020-10-14 10:21:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 17442 transitions. [2020-10-14 10:21:20,817 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 17442 transitions. Word has length 176 [2020-10-14 10:21:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:20,817 INFO L479 AbstractCegarLoop]: Abstraction has 13462 states and 17442 transitions. [2020-10-14 10:21:20,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:21:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 17442 transitions. [2020-10-14 10:21:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 10:21:20,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:20,824 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:20,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:21:20,825 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash -577461337, now seen corresponding path program 1 times [2020-10-14 10:21:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:20,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024948594] [2020-10-14 10:21:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:21:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:21:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:21:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 10:21:21,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:21:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:21:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:21:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 10:21:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 10:21:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:21:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:21:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:21:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 10:21:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:21:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:21,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 10:21:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:21,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 10:21:21,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024948594] [2020-10-14 10:21:21,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:21:21,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:21:21,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367140094] [2020-10-14 10:21:21,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:21:21,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:21,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:21:21,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:21:21,999 INFO L87 Difference]: Start difference. First operand 13462 states and 17442 transitions. Second operand 11 states. [2020-10-14 10:21:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:25,661 INFO L93 Difference]: Finished difference Result 28506 states and 37734 transitions. [2020-10-14 10:21:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 10:21:25,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 231 [2020-10-14 10:21:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:25,723 INFO L225 Difference]: With dead ends: 28506 [2020-10-14 10:21:25,723 INFO L226 Difference]: Without dead ends: 15443 [2020-10-14 10:21:25,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2020-10-14 10:21:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2020-10-14 10:21:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 15078. [2020-10-14 10:21:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15078 states. [2020-10-14 10:21:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15078 states to 15078 states and 19184 transitions. [2020-10-14 10:21:27,042 INFO L78 Accepts]: Start accepts. Automaton has 15078 states and 19184 transitions. Word has length 231 [2020-10-14 10:21:27,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:27,042 INFO L479 AbstractCegarLoop]: Abstraction has 15078 states and 19184 transitions. [2020-10-14 10:21:27,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:21:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15078 states and 19184 transitions. [2020-10-14 10:21:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 10:21:27,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:27,049 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:27,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:21:27,049 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2090640514, now seen corresponding path program 1 times [2020-10-14 10:21:27,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:27,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505085754] [2020-10-14 10:21:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 10:21:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 10:21:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 10:21:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:21:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 10:21:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:27,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:21:27,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:21:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:21:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:21:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 10:21:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:21:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 10:21:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 10:21:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 10:21:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:21:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:21:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:21:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:21:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:21:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 10:21:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:21:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:21:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:21:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:21:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:21:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 10:21:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:28,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:21:28,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:21:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:21:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-14 10:21:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:28,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:28,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:21:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 10:21:28,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505085754] [2020-10-14 10:21:28,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:21:28,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 10:21:28,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270495476] [2020-10-14 10:21:28,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 10:21:28,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:28,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 10:21:28,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:21:28,405 INFO L87 Difference]: Start difference. First operand 15078 states and 19184 transitions. Second operand 21 states. [2020-10-14 10:21:31,055 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-14 10:21:34,019 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-14 10:21:34,264 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-14 10:21:34,481 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-14 10:21:38,832 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-14 10:21:40,114 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-10-14 10:21:40,365 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-14 10:21:41,567 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-14 10:21:42,778 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-14 10:21:45,038 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-10-14 10:21:45,300 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-14 10:21:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:47,366 INFO L93 Difference]: Finished difference Result 35846 states and 45903 transitions. [2020-10-14 10:21:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-14 10:21:47,367 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 234 [2020-10-14 10:21:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:47,469 INFO L225 Difference]: With dead ends: 35846 [2020-10-14 10:21:47,469 INFO L226 Difference]: Without dead ends: 21922 [2020-10-14 10:21:47,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6586 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1841, Invalid=16519, Unknown=0, NotChecked=0, Total=18360 [2020-10-14 10:21:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21922 states. [2020-10-14 10:21:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21922 to 19242. [2020-10-14 10:21:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19242 states. [2020-10-14 10:21:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19242 states to 19242 states and 24314 transitions. [2020-10-14 10:21:49,392 INFO L78 Accepts]: Start accepts. Automaton has 19242 states and 24314 transitions. Word has length 234 [2020-10-14 10:21:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:49,393 INFO L479 AbstractCegarLoop]: Abstraction has 19242 states and 24314 transitions. [2020-10-14 10:21:49,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 10:21:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19242 states and 24314 transitions. [2020-10-14 10:21:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 10:21:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:49,402 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:49,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:21:49,402 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:49,403 INFO L82 PathProgramCache]: Analyzing trace with hash -385745313, now seen corresponding path program 1 times [2020-10-14 10:21:49,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:49,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696567130] [2020-10-14 10:21:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:21:49,440 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:21:49,440 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:21:49,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:21:49,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:21:49 BoogieIcfgContainer [2020-10-14 10:21:49,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:21:49,490 INFO L168 Benchmark]: Toolchain (without parser) took 221219.95 ms. Allocated memory was 149.4 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 104.1 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,490 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.20 ms. Allocated memory is still 149.4 MB. Free memory was 104.1 MB in the beginning and 88.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,491 INFO L168 Benchmark]: Boogie Preprocessor took 146.35 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 88.2 MB in the beginning and 181.9 MB in the end (delta: -93.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,491 INFO L168 Benchmark]: RCFGBuilder took 721.24 ms. Allocated memory is still 205.5 MB. Free memory was 181.9 MB in the beginning and 138.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,492 INFO L168 Benchmark]: TraceAbstraction took 219938.80 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 137.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-14 10:21:49,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.20 ms. Allocated memory is still 149.4 MB. Free memory was 104.1 MB in the beginning and 88.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.35 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 88.2 MB in the beginning and 181.9 MB in the end (delta: -93.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 721.24 ms. Allocated memory is still 205.5 MB. Free memory was 181.9 MB in the beginning and 138.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219938.80 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 137.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int c ; [L19] int c_t ; [L20] int c_req_up ; [L21] int p_in ; [L22] int p_out ; [L23] int wl_st ; [L24] int c1_st ; [L25] int c2_st ; [L26] int wb_st ; [L27] int r_st ; [L28] int wl_i ; [L29] int c1_i ; [L30] int c2_i ; [L31] int wb_i ; [L32] int r_i ; [L33] int wl_pc ; [L34] int c1_pc ; [L35] int c2_pc ; [L36] int wb_pc ; [L37] int e_e ; [L38] int e_f ; [L39] int e_g ; [L40] int e_c ; [L41] int e_p_in ; [L42] int e_wl ; [L48] int d ; [L49] int data ; [L50] int processed ; [L51] static int t_b ; [L691] int __retres1 ; [L695] e_wl = 2 [L696] e_c = e_wl [L697] e_g = e_c [L698] e_f = e_g [L699] e_e = e_f [L700] wl_pc = 0 [L701] c1_pc = 0 [L702] c2_pc = 0 [L703] wb_pc = 0 [L704] wb_i = 1 [L705] c2_i = wb_i [L706] c1_i = c2_i [L707] wl_i = c1_i [L708] r_i = 0 [L709] c_req_up = 0 [L710] d = 0 [L711] c = 0 [L712] CALL start_simulation() [L402] int kernel_st ; [L405] kernel_st = 0 [L406] COND FALSE !((int )c_req_up == 1) [L417] COND TRUE (int )wl_i == 1 [L418] wl_st = 0 [L422] COND TRUE (int )c1_i == 1 [L423] c1_st = 0 [L427] COND TRUE (int )c2_i == 1 [L428] c2_st = 0 [L432] COND TRUE (int )wb_i == 1 [L433] wb_st = 0 [L437] COND FALSE !((int )r_i == 1) [L440] r_st = 2 [L442] COND FALSE !((int )e_f == 0) [L447] COND FALSE !((int )e_g == 0) [L452] COND FALSE !((int )e_e == 0) [L457] COND FALSE !((int )e_c == 0) [L462] COND FALSE !((int )e_wl == 0) [L467] COND FALSE !((int )wl_pc == 1) [L475] COND FALSE !((int )wl_pc == 2) [L485] COND FALSE !((int )c1_pc == 1) [L494] COND FALSE !((int )c2_pc == 1) [L503] COND FALSE !((int )wb_pc == 1) [L512] COND FALSE !((int )e_c == 1) [L517] COND FALSE !((int )e_e == 1) [L522] COND FALSE !((int )e_f == 1) [L527] COND FALSE !((int )e_g == 1) [L532] COND FALSE !((int )e_c == 1) [L537] COND FALSE !((int )e_wl == 1) [L543] COND TRUE 1 [L546] kernel_st = 1 [L547] CALL eval() [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L292] int tmp___3 ; [L296] COND TRUE 1 [L298] COND TRUE (int )wl_st == 0 [L319] COND TRUE (int )wl_st == 0 [L321] tmp = __VERIFIER_nondet_int() [L323] COND TRUE \read(tmp) [L325] wl_st = 1 [L326] CALL write_loop() [L53] int t ; [L56] COND TRUE (int )wl_pc == 0 [L70] wl_st = 2 [L71] wl_pc = 1 [L72] e_wl = 0 [L326] RET write_loop() [L334] COND TRUE (int )c1_st == 0 [L336] tmp___0 = __VERIFIER_nondet_int() [L338] COND TRUE \read(tmp___0) [L340] c1_st = 1 [L341] CALL compute1() [L139] COND TRUE (int )c1_pc == 0 [L150] COND TRUE 1 [L152] c1_st = 2 [L153] c1_pc = 1 [L341] RET compute1() [L349] COND TRUE (int )c2_st == 0 [L351] tmp___1 = __VERIFIER_nondet_int() [L353] COND TRUE \read(tmp___1) [L355] c2_st = 1 [L356] CALL compute2() [L184] COND TRUE (int )c2_pc == 0 [L195] COND TRUE 1 [L197] c2_st = 2 [L198] c2_pc = 1 [L356] RET compute2() [L364] COND TRUE (int )wb_st == 0 [L366] tmp___2 = __VERIFIER_nondet_int() [L368] COND TRUE \read(tmp___2) [L370] wb_st = 1 [L371] CALL write_back() [L229] COND TRUE (int )wb_pc == 0 [L240] COND TRUE 1 [L242] wb_st = 2 [L243] wb_pc = 1 [L371] RET write_back() [L379] COND FALSE !((int )r_st == 0) [L296] COND TRUE 1 [L298] COND FALSE !((int )wl_st == 0) [L301] COND FALSE !((int )c1_st == 0) [L304] COND FALSE !((int )c2_st == 0) [L307] COND FALSE !((int )wb_st == 0) [L310] COND FALSE !((int )r_st == 0) [L547] RET eval() [L549] kernel_st = 2 [L550] COND FALSE !((int )c_req_up == 1) [L561] kernel_st = 3 [L562] COND FALSE !((int )e_f == 0) [L567] COND FALSE !((int )e_g == 0) [L572] COND FALSE !((int )e_e == 0) [L577] COND FALSE !((int )e_c == 0) [L582] COND TRUE (int )e_wl == 0 [L583] e_wl = 1 [L587] COND TRUE (int )wl_pc == 1 [L588] COND TRUE (int )e_wl == 1 [L589] wl_st = 0 [L605] COND TRUE (int )c1_pc == 1 [L606] COND FALSE !((int )e_f == 1) [L614] COND TRUE (int )c2_pc == 1 [L615] COND FALSE !((int )e_f == 1) [L623] COND TRUE (int )wb_pc == 1 [L624] COND FALSE !((int )e_g == 1) [L632] COND FALSE !((int )e_c == 1) [L637] COND FALSE !((int )e_e == 1) [L642] COND FALSE !((int )e_f == 1) [L647] COND FALSE !((int )e_g == 1) [L652] COND FALSE !((int )e_c == 1) [L657] COND TRUE (int )e_wl == 1 [L658] e_wl = 2 [L662] COND TRUE (int )wl_st == 0 [L543] COND TRUE 1 [L546] kernel_st = 1 [L547] CALL eval() [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L292] int tmp___3 ; [L296] COND TRUE 1 [L298] COND TRUE (int )wl_st == 0 [L319] COND TRUE (int )wl_st == 0 [L321] tmp = __VERIFIER_nondet_int() [L323] COND TRUE \read(tmp) [L325] wl_st = 1 [L326] CALL write_loop() [L53] int t ; [L56] COND FALSE !((int )wl_pc == 0) [L59] COND FALSE !((int )wl_pc == 2) [L62] COND TRUE (int )wl_pc == 1 [L77] COND TRUE 1 [L79] t = d [L80] data = d [L81] processed = 0 [L82] e_f = 1 [L83] COND TRUE (int )c1_pc == 1 [L84] COND TRUE (int )e_f == 1 [L85] c1_st = 0 [L92] COND TRUE (int )c2_pc == 1 [L93] COND TRUE (int )e_f == 1 [L94] c2_st = 0 [L101] e_f = 2 [L102] wl_st = 2 [L103] wl_pc = 2 [L104] t_b = t [L326] RET write_loop() [L334] COND TRUE (int )c1_st == 0 [L336] tmp___0 = __VERIFIER_nondet_int() [L338] COND TRUE \read(tmp___0) [L340] c1_st = 1 [L341] CALL compute1() [L139] COND FALSE !((int )c1_pc == 0) [L142] COND TRUE (int )c1_pc == 1 [L157] COND TRUE ! processed [L158] data += 1 [L159] e_g = 1 [L160] COND TRUE (int )wb_pc == 1 [L161] COND TRUE (int )e_g == 1 [L162] wb_st = 0 [L169] e_g = 2 [L150] COND TRUE 1 [L152] c1_st = 2 [L153] c1_pc = 1 [L341] RET compute1() [L349] COND TRUE (int )c2_st == 0 [L351] tmp___1 = __VERIFIER_nondet_int() [L353] COND TRUE \read(tmp___1) [L355] c2_st = 1 [L356] CALL compute2() [L184] COND FALSE !((int )c2_pc == 0) [L187] COND TRUE (int )c2_pc == 1 [L202] COND TRUE ! processed [L203] data += 1 [L204] e_g = 1 [L205] COND TRUE (int )wb_pc == 1 [L206] COND TRUE (int )e_g == 1 [L207] wb_st = 0 [L214] e_g = 2 [L195] COND TRUE 1 [L197] c2_st = 2 [L198] c2_pc = 1 [L356] RET compute2() [L364] COND TRUE (int )wb_st == 0 [L366] tmp___2 = __VERIFIER_nondet_int() [L368] COND TRUE \read(tmp___2) [L370] wb_st = 1 [L371] CALL write_back() [L229] COND FALSE !((int )wb_pc == 0) [L232] COND TRUE (int )wb_pc == 1 [L247] c_t = data [L248] c_req_up = 1 [L249] processed = 1 [L240] COND TRUE 1 [L242] wb_st = 2 [L243] wb_pc = 1 [L371] RET write_back() [L379] COND FALSE !((int )r_st == 0) [L296] COND TRUE 1 [L298] COND FALSE !((int )wl_st == 0) [L301] COND FALSE !((int )c1_st == 0) [L304] COND FALSE !((int )c2_st == 0) [L307] COND FALSE !((int )wb_st == 0) [L310] COND FALSE !((int )r_st == 0) [L547] RET eval() [L549] kernel_st = 2 [L550] COND TRUE (int )c_req_up == 1 [L551] COND TRUE c != c_t [L552] c = c_t [L553] e_c = 0 [L557] c_req_up = 0 [L561] kernel_st = 3 [L562] COND FALSE !((int )e_f == 0) [L567] COND FALSE !((int )e_g == 0) [L572] COND FALSE !((int )e_e == 0) [L577] COND TRUE (int )e_c == 0 [L578] e_c = 1 [L582] COND FALSE !((int )e_wl == 0) [L587] COND FALSE !((int )wl_pc == 1) [L595] COND TRUE (int )wl_pc == 2 [L596] COND FALSE !((int )e_e == 1) [L605] COND TRUE (int )c1_pc == 1 [L606] COND FALSE !((int )e_f == 1) [L614] COND TRUE (int )c2_pc == 1 [L615] COND FALSE !((int )e_f == 1) [L623] COND TRUE (int )wb_pc == 1 [L624] COND FALSE !((int )e_g == 1) [L632] COND TRUE (int )e_c == 1 [L633] r_st = 0 [L637] COND FALSE !((int )e_e == 1) [L642] COND FALSE !((int )e_f == 1) [L647] COND FALSE !((int )e_g == 1) [L652] COND TRUE (int )e_c == 1 [L653] e_c = 2 [L657] COND FALSE !((int )e_wl == 1) [L662] COND FALSE !((int )wl_st == 0) [L665] COND FALSE !((int )c1_st == 0) [L668] COND FALSE !((int )c2_st == 0) [L671] COND FALSE !((int )wb_st == 0) [L674] COND TRUE (int )r_st == 0 [L543] COND TRUE 1 [L546] kernel_st = 1 [L547] CALL eval() [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L292] int tmp___3 ; [L296] COND TRUE 1 [L298] COND FALSE !((int )wl_st == 0) [L301] COND FALSE !((int )c1_st == 0) [L304] COND FALSE !((int )c2_st == 0) [L307] COND FALSE !((int )wb_st == 0) [L310] COND TRUE (int )r_st == 0 [L319] COND FALSE !((int )wl_st == 0) [L334] COND FALSE !((int )c1_st == 0) [L349] COND FALSE !((int )c2_st == 0) [L364] COND FALSE !((int )wb_st == 0) [L379] COND TRUE (int )r_st == 0 [L381] tmp___3 = __VERIFIER_nondet_int() [L383] COND TRUE \read(tmp___3) [L385] r_st = 1 [L386] CALL read() [L261] d = c [L262] e_e = 1 [L263] COND FALSE !((int )wl_pc == 1) [L271] COND TRUE (int )wl_pc == 2 [L272] COND TRUE (int )e_e == 1 [L273] wl_st = 0 [L281] e_e = 2 [L282] r_st = 2 [L386] RET read() [L296] COND TRUE 1 [L298] COND TRUE (int )wl_st == 0 [L319] COND TRUE (int )wl_st == 0 [L321] tmp = __VERIFIER_nondet_int() [L323] COND TRUE \read(tmp) [L325] wl_st = 1 [L326] CALL write_loop() [L53] int t ; [L56] COND FALSE !((int )wl_pc == 0) [L59] COND TRUE (int )wl_pc == 2 [L108] t = t_b [L109] COND FALSE !(d == t + 1) [L112] COND TRUE d == t + 2 [L120] COND FALSE !(d == t + 1) [L124] CALL error() [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 161 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 219.8s, OverallIterations: 33, TraceHistogramMax: 6, AutomataDifference: 91.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6319 SDtfs, 27566 SDslu, 15567 SDs, 0 SdLazy, 32256 SolverSat, 5364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1204 GetRequests, 588 SyntacticMatches, 4 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9539 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29043occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.5s AutomataMinimizationTime, 32 MinimizatonAttempts, 57190 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 104.3s InterpolantComputationTime, 3807 NumberOfCodeBlocks, 3807 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 3540 ConstructedInterpolants, 0 QuantifiedInterpolants, 1743533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 23 PerfectInterpolantSequences, 1001/1036 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...