/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:02:18,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:02:18,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:02:18,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:02:18,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:02:18,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:02:18,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:02:18,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:02:18,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:02:18,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:02:18,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:02:18,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:02:18,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:02:18,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:02:18,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:02:18,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:02:18,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:02:18,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:02:18,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:02:18,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:02:18,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:02:18,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:02:18,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:02:18,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:02:18,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:02:18,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:02:18,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:02:18,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:02:18,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:02:18,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:02:18,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:02:18,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:02:18,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:02:18,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:02:18,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:02:18,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:02:18,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:02:18,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:02:18,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:02:18,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:02:18,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:02:18,985 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 09:02:19,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:02:19,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:02:19,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:02:19,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:02:19,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:02:19,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:02:19,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:02:19,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:02:19,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:02:19,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:02:19,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:02:19,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:02:19,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:02:19,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:02:19,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:02:19,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:02:19,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:02:19,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:02:19,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:02:19,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:02:19,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:02:19,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:02:19,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:02:19,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:02:19,015 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 09:02:19,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:02:19,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:02:19,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:02:19,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:02:19,367 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:02:19,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:02:19,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b63cab8/3aa550fa21da48fa9eacbc2ae73ef9dc/FLAGcbf018c49 [2020-10-14 09:02:19,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:02:19,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:02:19,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b63cab8/3aa550fa21da48fa9eacbc2ae73ef9dc/FLAGcbf018c49 [2020-10-14 09:02:20,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b63cab8/3aa550fa21da48fa9eacbc2ae73ef9dc [2020-10-14 09:02:20,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:02:20,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:02:20,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:20,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:02:20,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:02:20,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20, skipping insertion in model container [2020-10-14 09:02:20,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:02:20,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:02:20,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:20,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:02:20,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:20,832 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:02:20,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20 WrapperNode [2020-10-14 09:02:20,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:20,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:02:20,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:02:20,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:02:20,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (1/1) ... [2020-10-14 09:02:20,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:02:20,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:02:20,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:02:20,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:02:20,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (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 09:02:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:02:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:02:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:02:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:02:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:02:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:02:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:02:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:02:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:02:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:02:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:02:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:02:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:02:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:02:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:02:21,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:02:21,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:02:21,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:21 BoogieIcfgContainer [2020-10-14 09:02:21,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:02:21,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:02:21,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:02:21,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:02:21,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:02:20" (1/3) ... [2020-10-14 09:02:21,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4bbacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:21, skipping insertion in model container [2020-10-14 09:02:21,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:20" (2/3) ... [2020-10-14 09:02:21,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4bbacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:21, skipping insertion in model container [2020-10-14 09:02:21,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:21" (3/3) ... [2020-10-14 09:02:21,520 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:02:21,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:02:21,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:02:21,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:02:21,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:02:21,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:02:21,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:02:21,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:02:21,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:02:21,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:02:21,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:02:21,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:02:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-10-14 09:02:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 09:02:21,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:21,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:21,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:21,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1677922447, now seen corresponding path program 1 times [2020-10-14 09:02:21,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:21,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076086775] [2020-10-14 09:02:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:22,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 09:02:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:02:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-14 09:02:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:22,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 09:02:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:02:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:02:23,203 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 09:02:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:23,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:23,243 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 09:02:23,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076086775] [2020-10-14 09:02:23,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:23,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:23,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162958197] [2020-10-14 09:02:23,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:23,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:23,272 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 4 states. [2020-10-14 09:02:23,451 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 09:02:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:24,060 INFO L93 Difference]: Finished difference Result 212 states and 331 transitions. [2020-10-14 09:02:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:24,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 09:02:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:24,079 INFO L225 Difference]: With dead ends: 212 [2020-10-14 09:02:24,080 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 09:02:24,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:02:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 09:02:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-14 09:02:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 09:02:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 198 transitions. [2020-10-14 09:02:24,144 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 198 transitions. Word has length 42 [2020-10-14 09:02:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:24,145 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 198 transitions. [2020-10-14 09:02:24,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 198 transitions. [2020-10-14 09:02:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 09:02:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:24,148 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] [2020-10-14 09:02:24,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:02:24,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1937467768, now seen corresponding path program 1 times [2020-10-14 09:02:24,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:24,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145760736] [2020-10-14 09:02:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:24,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 09:02:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 09:02:24,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:24,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:02:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:02:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:24,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:24,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:24,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:24,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:02:24,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:24,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:24,639 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 09:02:24,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145760736] [2020-10-14 09:02:24,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:24,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:24,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738213251] [2020-10-14 09:02:24,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:24,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:24,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:24,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:24,644 INFO L87 Difference]: Start difference. First operand 134 states and 198 transitions. Second operand 4 states. [2020-10-14 09:02:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:25,100 INFO L93 Difference]: Finished difference Result 322 states and 494 transitions. [2020-10-14 09:02:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:25,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 09:02:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:25,104 INFO L225 Difference]: With dead ends: 322 [2020-10-14 09:02:25,104 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 09:02:25,106 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 09:02:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 09:02:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-10-14 09:02:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 09:02:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 317 transitions. [2020-10-14 09:02:25,158 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 317 transitions. Word has length 43 [2020-10-14 09:02:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:25,159 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 317 transitions. [2020-10-14 09:02:25,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 317 transitions. [2020-10-14 09:02:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 09:02:25,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:25,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:25,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:02:25,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:25,162 INFO L82 PathProgramCache]: Analyzing trace with hash 583809816, now seen corresponding path program 1 times [2020-10-14 09:02:25,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:25,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739256416] [2020-10-14 09:02:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:25,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 09:02:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-14 09:02:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:25,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:02:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 09:02:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:25,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:25,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:02:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:25,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:25,877 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 09:02:25,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739256416] [2020-10-14 09:02:25,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:25,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:25,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097576369] [2020-10-14 09:02:25,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:25,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:25,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:25,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:25,880 INFO L87 Difference]: Start difference. First operand 210 states and 317 transitions. Second operand 6 states. [2020-10-14 09:02:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:26,328 INFO L93 Difference]: Finished difference Result 954 states and 1489 transitions. [2020-10-14 09:02:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:26,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 09:02:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:26,335 INFO L225 Difference]: With dead ends: 954 [2020-10-14 09:02:26,335 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 09:02:26,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 09:02:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 394. [2020-10-14 09:02:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-14 09:02:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 601 transitions. [2020-10-14 09:02:26,381 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 601 transitions. Word has length 44 [2020-10-14 09:02:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:26,381 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 601 transitions. [2020-10-14 09:02:26,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 601 transitions. [2020-10-14 09:02:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 09:02:26,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:26,384 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] [2020-10-14 09:02:26,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:02:26,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash 899702325, now seen corresponding path program 1 times [2020-10-14 09:02:26,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:26,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884609791] [2020-10-14 09:02:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 09:02:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 09:02:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:26,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:02:26,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:02:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:27,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:02:27,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:27,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 09:02:27,036 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 09:02:27,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884609791] [2020-10-14 09:02:27,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:27,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:27,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989568596] [2020-10-14 09:02:27,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:27,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:27,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:27,039 INFO L87 Difference]: Start difference. First operand 394 states and 601 transitions. Second operand 6 states. [2020-10-14 09:02:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:27,687 INFO L93 Difference]: Finished difference Result 1352 states and 2084 transitions. [2020-10-14 09:02:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:02:27,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 09:02:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:27,694 INFO L225 Difference]: With dead ends: 1352 [2020-10-14 09:02:27,694 INFO L226 Difference]: Without dead ends: 982 [2020-10-14 09:02:27,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-10-14 09:02:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 978. [2020-10-14 09:02:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-10-14 09:02:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1497 transitions. [2020-10-14 09:02:27,762 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1497 transitions. Word has length 45 [2020-10-14 09:02:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:27,763 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1497 transitions. [2020-10-14 09:02:27,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1497 transitions. [2020-10-14 09:02:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 09:02:27,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:27,766 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] [2020-10-14 09:02:27,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:02:27,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash 869187691, now seen corresponding path program 1 times [2020-10-14 09:02:27,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:27,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941696994] [2020-10-14 09:02:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 09:02:28,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 09:02:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:28,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:02:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 09:02:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:28,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:02:28,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:28,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:28,168 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 09:02:28,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941696994] [2020-10-14 09:02:28,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:28,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:28,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917100030] [2020-10-14 09:02:28,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:28,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:28,171 INFO L87 Difference]: Start difference. First operand 978 states and 1497 transitions. Second operand 4 states. [2020-10-14 09:02:28,291 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 09:02:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:28,832 INFO L93 Difference]: Finished difference Result 2494 states and 3811 transitions. [2020-10-14 09:02:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:28,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 09:02:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:28,842 INFO L225 Difference]: With dead ends: 2494 [2020-10-14 09:02:28,842 INFO L226 Difference]: Without dead ends: 1540 [2020-10-14 09:02:28,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:02:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-10-14 09:02:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1538. [2020-10-14 09:02:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-10-14 09:02:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2313 transitions. [2020-10-14 09:02:28,951 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2313 transitions. Word has length 46 [2020-10-14 09:02:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:28,951 INFO L479 AbstractCegarLoop]: Abstraction has 1538 states and 2313 transitions. [2020-10-14 09:02:28,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2313 transitions. [2020-10-14 09:02:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 09:02:28,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:28,958 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 09:02:28,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:02:28,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:28,959 INFO L82 PathProgramCache]: Analyzing trace with hash -281581922, now seen corresponding path program 1 times [2020-10-14 09:02:28,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:28,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524069992] [2020-10-14 09:02:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 09:02:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 09:02:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:29,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:02:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:02:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:29,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:29,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524069992] [2020-10-14 09:02:29,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:29,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:29,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066009896] [2020-10-14 09:02:29,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:29,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:29,484 INFO L87 Difference]: Start difference. First operand 1538 states and 2313 transitions. Second operand 6 states. [2020-10-14 09:02:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:30,214 INFO L93 Difference]: Finished difference Result 4526 states and 6811 transitions. [2020-10-14 09:02:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:30,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-14 09:02:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:30,230 INFO L225 Difference]: With dead ends: 4526 [2020-10-14 09:02:30,230 INFO L226 Difference]: Without dead ends: 3012 [2020-10-14 09:02:30,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:02:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-10-14 09:02:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3010. [2020-10-14 09:02:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-10-14 09:02:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4481 transitions. [2020-10-14 09:02:30,443 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4481 transitions. Word has length 47 [2020-10-14 09:02:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:30,444 INFO L479 AbstractCegarLoop]: Abstraction has 3010 states and 4481 transitions. [2020-10-14 09:02:30,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4481 transitions. [2020-10-14 09:02:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 09:02:30,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:30,445 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 09:02:30,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:02:30,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1095993917, now seen corresponding path program 1 times [2020-10-14 09:02:30,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:30,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614980389] [2020-10-14 09:02:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:30,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 09:02:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 09:02:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:30,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:02:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 09:02:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:02:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:30,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:30,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:30,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:30,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:30,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:30,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:30,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:30,701 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 09:02:30,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614980389] [2020-10-14 09:02:30,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:30,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:30,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503645623] [2020-10-14 09:02:30,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:02:30,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:02:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:02:30,703 INFO L87 Difference]: Start difference. First operand 3010 states and 4481 transitions. Second operand 5 states. [2020-10-14 09:02:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:31,500 INFO L93 Difference]: Finished difference Result 6188 states and 9130 transitions. [2020-10-14 09:02:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:02:31,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-14 09:02:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:31,531 INFO L225 Difference]: With dead ends: 6188 [2020-10-14 09:02:31,531 INFO L226 Difference]: Without dead ends: 6186 [2020-10-14 09:02:31,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2020-10-14 09:02:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 3202. [2020-10-14 09:02:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3202 states. [2020-10-14 09:02:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4673 transitions. [2020-10-14 09:02:31,811 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4673 transitions. Word has length 47 [2020-10-14 09:02:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:31,811 INFO L479 AbstractCegarLoop]: Abstraction has 3202 states and 4673 transitions. [2020-10-14 09:02:31,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:02:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4673 transitions. [2020-10-14 09:02:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 09:02:31,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:31,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:31,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:02:31,813 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 393546649, now seen corresponding path program 1 times [2020-10-14 09:02:31,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:31,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123156730] [2020-10-14 09:02:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 09:02:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 09:02:31,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:31,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:02:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:02:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:32,070 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 09:02:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:32,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:32,093 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 09:02:32,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123156730] [2020-10-14 09:02:32,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:32,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:32,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002096988] [2020-10-14 09:02:32,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:32,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:32,096 INFO L87 Difference]: Start difference. First operand 3202 states and 4673 transitions. Second operand 4 states. [2020-10-14 09:02:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:32,835 INFO L93 Difference]: Finished difference Result 7092 states and 10337 transitions. [2020-10-14 09:02:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:32,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 09:02:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:32,854 INFO L225 Difference]: With dead ends: 7092 [2020-10-14 09:02:32,854 INFO L226 Difference]: Without dead ends: 3914 [2020-10-14 09:02:32,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:02:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2020-10-14 09:02:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3892. [2020-10-14 09:02:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3892 states. [2020-10-14 09:02:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 5627 transitions. [2020-10-14 09:02:33,219 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 5627 transitions. Word has length 48 [2020-10-14 09:02:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:33,220 INFO L479 AbstractCegarLoop]: Abstraction has 3892 states and 5627 transitions. [2020-10-14 09:02:33,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 5627 transitions. [2020-10-14 09:02:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:02:33,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:33,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:33,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:02:33,224 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1259242370, now seen corresponding path program 1 times [2020-10-14 09:02:33,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:33,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434973809] [2020-10-14 09:02:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:34,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:02:34,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:02:34,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-10-14 09:02:34,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:34,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:02:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:02:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:02:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:34,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:34,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:02:34,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:34,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 09:02:34,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434973809] [2020-10-14 09:02:34,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:02:34,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 09:02:34,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086587367] [2020-10-14 09:02:34,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:02:34,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:34,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:02:34,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:02:34,928 INFO L87 Difference]: Start difference. First operand 3892 states and 5627 transitions. Second operand 5 states. [2020-10-14 09:02:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:35,967 INFO L93 Difference]: Finished difference Result 9750 states and 14122 transitions. [2020-10-14 09:02:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:35,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-14 09:02:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:35,999 INFO L225 Difference]: With dead ends: 9750 [2020-10-14 09:02:35,999 INFO L226 Difference]: Without dead ends: 6572 [2020-10-14 09:02:36,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:02:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2020-10-14 09:02:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 6524. [2020-10-14 09:02:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6524 states. [2020-10-14 09:02:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6524 states to 6524 states and 9295 transitions. [2020-10-14 09:02:36,558 INFO L78 Accepts]: Start accepts. Automaton has 6524 states and 9295 transitions. Word has length 67 [2020-10-14 09:02:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:36,558 INFO L479 AbstractCegarLoop]: Abstraction has 6524 states and 9295 transitions. [2020-10-14 09:02:36,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:02:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6524 states and 9295 transitions. [2020-10-14 09:02:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:02:36,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:36,562 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:02:36,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:02:36,562 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1832759001, now seen corresponding path program 1 times [2020-10-14 09:02:36,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:36,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950210567] [2020-10-14 09:02:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:02:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:02:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:02:41,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:41,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:02:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:02:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:41,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:41,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:41,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:41,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950210567] [2020-10-14 09:02:41,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:41,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:41,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790433791] [2020-10-14 09:02:41,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:41,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:41,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:41,736 INFO L87 Difference]: Start difference. First operand 6524 states and 9295 transitions. Second operand 4 states. [2020-10-14 09:02:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:42,802 INFO L93 Difference]: Finished difference Result 15345 states and 21875 transitions. [2020-10-14 09:02:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:02:42,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:02:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:42,853 INFO L225 Difference]: With dead ends: 15345 [2020-10-14 09:02:42,853 INFO L226 Difference]: Without dead ends: 10559 [2020-10-14 09:02:42,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2020-10-14 09:02:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 10557. [2020-10-14 09:02:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10557 states. [2020-10-14 09:02:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10557 states to 10557 states and 14861 transitions. [2020-10-14 09:02:43,649 INFO L78 Accepts]: Start accepts. Automaton has 10557 states and 14861 transitions. Word has length 67 [2020-10-14 09:02:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:43,650 INFO L479 AbstractCegarLoop]: Abstraction has 10557 states and 14861 transitions. [2020-10-14 09:02:43,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10557 states and 14861 transitions. [2020-10-14 09:02:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:02:43,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:43,654 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:02:43,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:02:43,655 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1763915728, now seen corresponding path program 1 times [2020-10-14 09:02:43,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:43,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000100614] [2020-10-14 09:02:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:46,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:02:46,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:02:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2830 [2020-10-14 09:02:46,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:46,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 09:02:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:02:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:46,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:46,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:02:46,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:46,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:46,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000100614] [2020-10-14 09:02:46,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:46,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:46,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412444706] [2020-10-14 09:02:46,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:46,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:46,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:46,651 INFO L87 Difference]: Start difference. First operand 10557 states and 14861 transitions. Second operand 4 states. [2020-10-14 09:02:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:47,425 INFO L93 Difference]: Finished difference Result 19114 states and 26904 transitions. [2020-10-14 09:02:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:02:47,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:02:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:47,449 INFO L225 Difference]: With dead ends: 19114 [2020-10-14 09:02:47,449 INFO L226 Difference]: Without dead ends: 8584 [2020-10-14 09:02:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8584 states. [2020-10-14 09:02:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8584 to 8582. [2020-10-14 09:02:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8582 states. [2020-10-14 09:02:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8582 states to 8582 states and 11909 transitions. [2020-10-14 09:02:48,134 INFO L78 Accepts]: Start accepts. Automaton has 8582 states and 11909 transitions. Word has length 67 [2020-10-14 09:02:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:48,135 INFO L479 AbstractCegarLoop]: Abstraction has 8582 states and 11909 transitions. [2020-10-14 09:02:48,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8582 states and 11909 transitions. [2020-10-14 09:02:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:02:48,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:48,139 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:02:48,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:02:48,139 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:48,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2123259927, now seen corresponding path program 1 times [2020-10-14 09:02:48,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:48,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126803290] [2020-10-14 09:02:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:49,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:02:49,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:02:49,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-14 09:02:49,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:49,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:49,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:02:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:02:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:02:49,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:49,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:49,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126803290] [2020-10-14 09:02:49,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:49,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:49,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714984963] [2020-10-14 09:02:49,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:49,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:49,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:49,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:49,385 INFO L87 Difference]: Start difference. First operand 8582 states and 11909 transitions. Second operand 4 states. [2020-10-14 09:02:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:50,406 INFO L93 Difference]: Finished difference Result 16813 states and 23164 transitions. [2020-10-14 09:02:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:50,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:02:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:50,436 INFO L225 Difference]: With dead ends: 16813 [2020-10-14 09:02:50,436 INFO L226 Difference]: Without dead ends: 11574 [2020-10-14 09:02:50,452 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 09:02:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-10-14 09:02:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 11572. [2020-10-14 09:02:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11572 states. [2020-10-14 09:02:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 15764 transitions. [2020-10-14 09:02:51,071 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 15764 transitions. Word has length 68 [2020-10-14 09:02:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:51,071 INFO L479 AbstractCegarLoop]: Abstraction has 11572 states and 15764 transitions. [2020-10-14 09:02:51,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 15764 transitions. [2020-10-14 09:02:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:02:51,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:51,075 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:02:51,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:02:51,076 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:51,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1684871538, now seen corresponding path program 1 times [2020-10-14 09:02:51,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:51,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391796931] [2020-10-14 09:02:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:02:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:02:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:02:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:56,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:02:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:02:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:56,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:56,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:56,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:56,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391796931] [2020-10-14 09:02:56,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:56,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:56,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236418022] [2020-10-14 09:02:56,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:56,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:56,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:56,240 INFO L87 Difference]: Start difference. First operand 11572 states and 15764 transitions. Second operand 4 states. [2020-10-14 09:02:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:57,953 INFO L93 Difference]: Finished difference Result 19618 states and 26547 transitions. [2020-10-14 09:02:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:57,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:02:57,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:57,988 INFO L225 Difference]: With dead ends: 19618 [2020-10-14 09:02:57,989 INFO L226 Difference]: Without dead ends: 12094 [2020-10-14 09:02:58,009 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 09:02:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12094 states. [2020-10-14 09:02:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12094 to 11615. [2020-10-14 09:02:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11615 states. [2020-10-14 09:02:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11615 states to 11615 states and 15578 transitions. [2020-10-14 09:02:58,788 INFO L78 Accepts]: Start accepts. Automaton has 11615 states and 15578 transitions. Word has length 68 [2020-10-14 09:02:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:58,789 INFO L479 AbstractCegarLoop]: Abstraction has 11615 states and 15578 transitions. [2020-10-14 09:02:58,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 11615 states and 15578 transitions. [2020-10-14 09:02:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:02:58,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:58,793 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:02:58,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:02:58,793 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -644809078, now seen corresponding path program 1 times [2020-10-14 09:02:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:58,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701697734] [2020-10-14 09:02:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3294 [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 09:03:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:03:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:02,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:02,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:03:02,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:02,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 09:03:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701697734] [2020-10-14 09:03:02,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:02,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:02,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367449959] [2020-10-14 09:03:02,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:02,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:02,255 INFO L87 Difference]: Start difference. First operand 11615 states and 15578 transitions. Second operand 6 states. [2020-10-14 09:03:02,404 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 09:03:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:03,873 INFO L93 Difference]: Finished difference Result 25490 states and 34781 transitions. [2020-10-14 09:03:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:03,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:03:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:03,911 INFO L225 Difference]: With dead ends: 25490 [2020-10-14 09:03:03,912 INFO L226 Difference]: Without dead ends: 21333 [2020-10-14 09:03:03,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2020-10-14 09:03:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 16901. [2020-10-14 09:03:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16901 states. [2020-10-14 09:03:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16901 states to 16901 states and 22634 transitions. [2020-10-14 09:03:05,189 INFO L78 Accepts]: Start accepts. Automaton has 16901 states and 22634 transitions. Word has length 68 [2020-10-14 09:03:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:05,189 INFO L479 AbstractCegarLoop]: Abstraction has 16901 states and 22634 transitions. [2020-10-14 09:03:05,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16901 states and 22634 transitions. [2020-10-14 09:03:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:03:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:05,192 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:03:05,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:03:05,193 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash 10881536, now seen corresponding path program 1 times [2020-10-14 09:03:05,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:05,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119297934] [2020-10-14 09:03:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:03:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 09:03:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:06,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:03:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:03:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 09:03:06,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119297934] [2020-10-14 09:03:06,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:06,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:06,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635984487] [2020-10-14 09:03:06,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:06,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:06,199 INFO L87 Difference]: Start difference. First operand 16901 states and 22634 transitions. Second operand 6 states. [2020-10-14 09:03:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:07,947 INFO L93 Difference]: Finished difference Result 28755 states and 38816 transitions. [2020-10-14 09:03:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:07,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:03:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:07,978 INFO L225 Difference]: With dead ends: 28755 [2020-10-14 09:03:07,978 INFO L226 Difference]: Without dead ends: 22303 [2020-10-14 09:03:07,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22303 states. [2020-10-14 09:03:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22303 to 18082. [2020-10-14 09:03:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18082 states. [2020-10-14 09:03:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18082 states to 18082 states and 24171 transitions. [2020-10-14 09:03:09,064 INFO L78 Accepts]: Start accepts. Automaton has 18082 states and 24171 transitions. Word has length 68 [2020-10-14 09:03:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:09,064 INFO L479 AbstractCegarLoop]: Abstraction has 18082 states and 24171 transitions. [2020-10-14 09:03:09,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18082 states and 24171 transitions. [2020-10-14 09:03:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:03:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:09,073 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:03:09,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:03:09,073 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash 773632439, now seen corresponding path program 1 times [2020-10-14 09:03:09,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:09,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180120778] [2020-10-14 09:03:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:09,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:03:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:03:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:09,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:09,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:03:09,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:09,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 09:03:09,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180120778] [2020-10-14 09:03:09,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:09,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:09,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616202575] [2020-10-14 09:03:09,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:09,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:09,991 INFO L87 Difference]: Start difference. First operand 18082 states and 24171 transitions. Second operand 6 states. [2020-10-14 09:03:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:11,517 INFO L93 Difference]: Finished difference Result 27786 states and 37388 transitions. [2020-10-14 09:03:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:11,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:03:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:11,551 INFO L225 Difference]: With dead ends: 27786 [2020-10-14 09:03:11,551 INFO L226 Difference]: Without dead ends: 23412 [2020-10-14 09:03:11,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23412 states. [2020-10-14 09:03:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23412 to 20322. [2020-10-14 09:03:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20322 states. [2020-10-14 09:03:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20322 states to 20322 states and 27163 transitions. [2020-10-14 09:03:13,290 INFO L78 Accepts]: Start accepts. Automaton has 20322 states and 27163 transitions. Word has length 68 [2020-10-14 09:03:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:13,291 INFO L479 AbstractCegarLoop]: Abstraction has 20322 states and 27163 transitions. [2020-10-14 09:03:13,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 20322 states and 27163 transitions. [2020-10-14 09:03:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:03:13,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:13,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:03:13,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:03:13,296 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:13,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:13,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1148082053, now seen corresponding path program 1 times [2020-10-14 09:03:13,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:13,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250378488] [2020-10-14 09:03:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:17,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:17,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:03:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:03:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4207 [2020-10-14 09:03:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:17,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:03:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:03:17,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:17,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:03:17,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:17,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:17,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250378488] [2020-10-14 09:03:17,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:17,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:17,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62727638] [2020-10-14 09:03:17,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:17,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:17,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:17,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:17,649 INFO L87 Difference]: Start difference. First operand 20322 states and 27163 transitions. Second operand 4 states. [2020-10-14 09:03:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:19,255 INFO L93 Difference]: Finished difference Result 31087 states and 41546 transitions. [2020-10-14 09:03:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:19,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 09:03:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:19,281 INFO L225 Difference]: With dead ends: 31087 [2020-10-14 09:03:19,281 INFO L226 Difference]: Without dead ends: 20341 [2020-10-14 09:03:19,298 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 09:03:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20341 states. [2020-10-14 09:03:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20341 to 20278. [2020-10-14 09:03:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20278 states. [2020-10-14 09:03:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20278 states to 20278 states and 26896 transitions. [2020-10-14 09:03:20,381 INFO L78 Accepts]: Start accepts. Automaton has 20278 states and 26896 transitions. Word has length 71 [2020-10-14 09:03:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:20,381 INFO L479 AbstractCegarLoop]: Abstraction has 20278 states and 26896 transitions. [2020-10-14 09:03:20,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 20278 states and 26896 transitions. [2020-10-14 09:03:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:03:20,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:20,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:20,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:03:20,386 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash -518632823, now seen corresponding path program 1 times [2020-10-14 09:03:20,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:20,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267238209] [2020-10-14 09:03:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:03:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:03:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:03:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:25,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:03:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:03:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:03:25,638 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 09:03:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:25,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:03:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:25,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:25,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267238209] [2020-10-14 09:03:25,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:25,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:25,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55474707] [2020-10-14 09:03:25,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:25,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:25,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:25,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:25,660 INFO L87 Difference]: Start difference. First operand 20278 states and 26896 transitions. Second operand 6 states. [2020-10-14 09:03:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:31,283 INFO L93 Difference]: Finished difference Result 106379 states and 140895 transitions. [2020-10-14 09:03:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:03:31,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:03:31,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:31,404 INFO L225 Difference]: With dead ends: 106379 [2020-10-14 09:03:31,405 INFO L226 Difference]: Without dead ends: 86822 [2020-10-14 09:03:31,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:03:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86822 states. [2020-10-14 09:03:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86822 to 65588. [2020-10-14 09:03:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65588 states. [2020-10-14 09:03:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65588 states to 65588 states and 86518 transitions. [2020-10-14 09:03:36,644 INFO L78 Accepts]: Start accepts. Automaton has 65588 states and 86518 transitions. Word has length 73 [2020-10-14 09:03:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:36,645 INFO L479 AbstractCegarLoop]: Abstraction has 65588 states and 86518 transitions. [2020-10-14 09:03:36,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 65588 states and 86518 transitions. [2020-10-14 09:03:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:03:36,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:36,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:36,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:03:36,652 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1586178236, now seen corresponding path program 1 times [2020-10-14 09:03:36,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:36,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795607770] [2020-10-14 09:03:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:41,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:03:41,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 09:03:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:03:41,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:41,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:03:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:41,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795607770] [2020-10-14 09:03:41,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:41,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:41,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150779631] [2020-10-14 09:03:41,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:41,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:41,790 INFO L87 Difference]: Start difference. First operand 65588 states and 86518 transitions. Second operand 6 states. [2020-10-14 09:03:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:48,689 INFO L93 Difference]: Finished difference Result 153011 states and 201623 transitions. [2020-10-14 09:03:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:03:48,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:03:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:48,811 INFO L225 Difference]: With dead ends: 153011 [2020-10-14 09:03:48,812 INFO L226 Difference]: Without dead ends: 87532 [2020-10-14 09:03:48,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87532 states. [2020-10-14 09:03:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87532 to 67022. [2020-10-14 09:03:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67022 states. [2020-10-14 09:03:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67022 states to 67022 states and 86210 transitions. [2020-10-14 09:03:53,378 INFO L78 Accepts]: Start accepts. Automaton has 67022 states and 86210 transitions. Word has length 73 [2020-10-14 09:03:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:53,378 INFO L479 AbstractCegarLoop]: Abstraction has 67022 states and 86210 transitions. [2020-10-14 09:03:53,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 67022 states and 86210 transitions. [2020-10-14 09:03:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:03:53,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:53,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:53,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:03:53,384 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 951369508, now seen corresponding path program 1 times [2020-10-14 09:03:53,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:53,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100337233] [2020-10-14 09:03:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:58,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:03:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:03:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:58,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100337233] [2020-10-14 09:03:58,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:03:58,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:03:58,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623839879] [2020-10-14 09:03:58,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:58,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:58,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:58,524 INFO L87 Difference]: Start difference. First operand 67022 states and 86210 transitions. Second operand 6 states. [2020-10-14 09:04:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:07,341 INFO L93 Difference]: Finished difference Result 170955 states and 219685 transitions. [2020-10-14 09:04:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:04:07,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:04:07,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:07,492 INFO L225 Difference]: With dead ends: 170955 [2020-10-14 09:04:07,492 INFO L226 Difference]: Without dead ends: 106827 [2020-10-14 09:04:07,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106827 states. [2020-10-14 09:04:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106827 to 71462. [2020-10-14 09:04:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71462 states. [2020-10-14 09:04:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71462 states to 71462 states and 91183 transitions. [2020-10-14 09:04:14,982 INFO L78 Accepts]: Start accepts. Automaton has 71462 states and 91183 transitions. Word has length 73 [2020-10-14 09:04:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:14,983 INFO L479 AbstractCegarLoop]: Abstraction has 71462 states and 91183 transitions. [2020-10-14 09:04:14,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 71462 states and 91183 transitions. [2020-10-14 09:04:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:04:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:14,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:04:14,989 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:14,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1532707753, now seen corresponding path program 1 times [2020-10-14 09:04:14,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:14,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798824367] [2020-10-14 09:04:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:20,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:04:20,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:04:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:04:20,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:20,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:04:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:04:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:20,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798824367] [2020-10-14 09:04:20,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:04:20,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:04:20,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065290953] [2020-10-14 09:04:20,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:20,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:20,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:20,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:20,127 INFO L87 Difference]: Start difference. First operand 71462 states and 91183 transitions. Second operand 6 states. [2020-10-14 09:04:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:39,913 INFO L93 Difference]: Finished difference Result 335534 states and 431204 transitions. [2020-10-14 09:04:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:04:39,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:04:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:40,330 INFO L225 Difference]: With dead ends: 335534 [2020-10-14 09:04:40,330 INFO L226 Difference]: Without dead ends: 266563 [2020-10-14 09:04:40,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:04:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266563 states. [2020-10-14 09:04:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266563 to 192713. [2020-10-14 09:04:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192713 states. [2020-10-14 09:04:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192713 states to 192713 states and 247028 transitions. [2020-10-14 09:04:58,077 INFO L78 Accepts]: Start accepts. Automaton has 192713 states and 247028 transitions. Word has length 73 [2020-10-14 09:04:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:58,077 INFO L479 AbstractCegarLoop]: Abstraction has 192713 states and 247028 transitions. [2020-10-14 09:04:58,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 192713 states and 247028 transitions. [2020-10-14 09:04:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:04:58,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:58,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:58,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:04:58,086 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1375759886, now seen corresponding path program 1 times [2020-10-14 09:04:58,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:58,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548924677] [2020-10-14 09:04:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:05:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:05:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:05:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:03,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:05:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:05:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:03,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:03,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548924677] [2020-10-14 09:05:03,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:05:03,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:05:03,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712970] [2020-10-14 09:05:03,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:03,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:03,230 INFO L87 Difference]: Start difference. First operand 192713 states and 247028 transitions. Second operand 6 states. [2020-10-14 09:05:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:22,786 INFO L93 Difference]: Finished difference Result 433716 states and 554663 transitions. [2020-10-14 09:05:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 09:05:22,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:05:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:23,147 INFO L225 Difference]: With dead ends: 433716 [2020-10-14 09:05:23,147 INFO L226 Difference]: Without dead ends: 241035 [2020-10-14 09:05:23,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:05:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241035 states. [2020-10-14 09:05:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241035 to 197531. [2020-10-14 09:05:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197531 states. [2020-10-14 09:05:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197531 states to 197531 states and 249506 transitions. [2020-10-14 09:05:44,032 INFO L78 Accepts]: Start accepts. Automaton has 197531 states and 249506 transitions. Word has length 73 [2020-10-14 09:05:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:44,032 INFO L479 AbstractCegarLoop]: Abstraction has 197531 states and 249506 transitions. [2020-10-14 09:05:44,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 197531 states and 249506 transitions. [2020-10-14 09:05:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 09:05:44,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:44,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:44,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:05:44,046 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash -260338592, now seen corresponding path program 1 times [2020-10-14 09:05:44,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:44,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96275230] [2020-10-14 09:05:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 09:05:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:05:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:05:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:49,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 09:05:49,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96275230] [2020-10-14 09:05:49,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:49,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:05:49,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356184950] [2020-10-14 09:05:49,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:49,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:49,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:49,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:49,235 INFO L87 Difference]: Start difference. First operand 197531 states and 249506 transitions. Second operand 6 states.