/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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:13:44,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:13:44,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:13:44,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:13:44,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:13:44,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:13:44,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:13:44,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:13:44,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:13:44,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:13:44,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:13:44,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:13:44,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:13:44,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:13:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:13:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:13:44,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:13:44,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:13:44,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:13:44,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:13:44,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:13:44,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:13:44,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:13:44,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:13:44,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:13:44,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:13:44,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:13:44,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:13:44,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:13:44,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:13:44,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:13:44,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:13:44,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:13:44,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:13:44,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:13:44,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:13:44,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:13:44,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:13:44,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:13:44,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:13:44,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:13:44,494 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 09:13:44,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:13:44,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:13:44,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:13:44,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:13:44,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:13:44,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:13:44,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:13:44,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:13:44,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:13:44,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:13:44,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:13:44,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:13:44,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:13:44,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:13:44,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:13:44,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:13:44,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:13:44,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:13:44,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:13:44,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:13:44,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:13:44,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:13:44,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:13:44,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:13:44,523 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 09:13:44,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:13:44,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:13:44,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:13:44,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:13:44,854 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:13:44,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:13:44,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d586f986/512affa096664601b0d457a1443fffa6/FLAG554404bd9 [2020-10-14 09:13:45,593 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:13:45,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:13:45,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d586f986/512affa096664601b0d457a1443fffa6/FLAG554404bd9 [2020-10-14 09:13:45,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d586f986/512affa096664601b0d457a1443fffa6 [2020-10-14 09:13:45,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:13:45,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:13:45,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:13:45,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:13:45,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:13:45,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:45" (1/1) ... [2020-10-14 09:13:45,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f0588b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:45, skipping insertion in model container [2020-10-14 09:13:45,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:45" (1/1) ... [2020-10-14 09:13:45,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:13:45,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:13:47,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:13:47,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:13:47,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:13:47,572 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:13:47,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47 WrapperNode [2020-10-14 09:13:47,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:13:47,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:13:47,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:13:47,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:13:47,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (1/1) ... [2020-10-14 09:13:47,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:13:47,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:13:47,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:13:47,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:13:47,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (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 09:13:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:13:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:13:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:13:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:13:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:13:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:13:47,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:13:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:13:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:13:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:13:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:13:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:13:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:13:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:13:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:13:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:13:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:13:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:13:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:13:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:13:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:13:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:13:51,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:13:51,844 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:13:51,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:51 BoogieIcfgContainer [2020-10-14 09:13:51,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:13:51,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:13:51,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:13:51,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:13:51,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:45" (1/3) ... [2020-10-14 09:13:51,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633a5435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:51, skipping insertion in model container [2020-10-14 09:13:51,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:47" (2/3) ... [2020-10-14 09:13:51,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633a5435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:51, skipping insertion in model container [2020-10-14 09:13:51,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:51" (3/3) ... [2020-10-14 09:13:51,881 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:13:51,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:13:51,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 09:13:51,933 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 09:13:51,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:13:51,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:13:51,977 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:13:51,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:13:51,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:13:51,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:13:51,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:13:51,978 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:13:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states. [2020-10-14 09:13:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:13:52,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:52,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:13:52,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:52,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:52,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1537336237, now seen corresponding path program 1 times [2020-10-14 09:13:52,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:52,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110290412] [2020-10-14 09:13:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:13:57,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:13:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 09:13:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:57,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:57,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:13:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 09:13:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:14:00,269 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:14:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:00,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:00,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 09:14:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:00,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:00,374 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 09:14:00,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110290412] [2020-10-14 09:14:00,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:00,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:14:00,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376950256] [2020-10-14 09:14:00,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:00,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:00,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:00,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:00,402 INFO L87 Difference]: Start difference. First operand 1107 states. Second operand 6 states. [2020-10-14 09:14:02,668 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:14:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:18,598 INFO L93 Difference]: Finished difference Result 2854 states and 5078 transitions. [2020-10-14 09:14:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:14:18,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:14:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:18,635 INFO L225 Difference]: With dead ends: 2854 [2020-10-14 09:14:18,635 INFO L226 Difference]: Without dead ends: 2042 [2020-10-14 09:14:18,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:14:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-14 09:14:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1586. [2020-10-14 09:14:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-14 09:14:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2155 transitions. [2020-10-14 09:14:18,800 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2155 transitions. Word has length 67 [2020-10-14 09:14:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:18,800 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 2155 transitions. [2020-10-14 09:14:18,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2155 transitions. [2020-10-14 09:14:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:14:18,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:18,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:14:18,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:14:18,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash 522357214, now seen corresponding path program 1 times [2020-10-14 09:14:18,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:18,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909274820] [2020-10-14 09:14:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:23,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:14:23,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:14:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:14:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:23,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:14:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:14:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:14:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:26,108 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:14:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:14:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:26,193 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 09:14:26,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909274820] [2020-10-14 09:14:26,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:26,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:14:26,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140875607] [2020-10-14 09:14:26,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:14:26,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:14:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:14:26,197 INFO L87 Difference]: Start difference. First operand 1586 states and 2155 transitions. Second operand 4 states. [2020-10-14 09:14:28,454 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:14:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:37,504 INFO L93 Difference]: Finished difference Result 2749 states and 3910 transitions. [2020-10-14 09:14:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:14:37,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:14:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:37,520 INFO L225 Difference]: With dead ends: 2749 [2020-10-14 09:14:37,520 INFO L226 Difference]: Without dead ends: 2103 [2020-10-14 09:14:37,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:14:37,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2020-10-14 09:14:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2095. [2020-10-14 09:14:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-10-14 09:14:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2907 transitions. [2020-10-14 09:14:37,631 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2907 transitions. Word has length 67 [2020-10-14 09:14:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:37,632 INFO L479 AbstractCegarLoop]: Abstraction has 2095 states and 2907 transitions. [2020-10-14 09:14:37,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:14:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2907 transitions. [2020-10-14 09:14:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:14:37,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:37,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:14:37,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:14:37,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:37,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2004494165, now seen corresponding path program 1 times [2020-10-14 09:14:37,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:37,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67537540] [2020-10-14 09:14:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:14:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:14:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 09:14:42,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:42,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:14:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:14:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:45,016 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:14:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:14:45,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:14:45,112 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 09:14:45,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67537540] [2020-10-14 09:14:45,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:45,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:14:45,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292099916] [2020-10-14 09:14:45,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:45,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:45,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:45,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:45,117 INFO L87 Difference]: Start difference. First operand 2095 states and 2907 transitions. Second operand 6 states. [2020-10-14 09:14:47,211 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:14:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:57,346 INFO L93 Difference]: Finished difference Result 3179 states and 4544 transitions. [2020-10-14 09:14:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:14:57,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:14:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:57,367 INFO L225 Difference]: With dead ends: 3179 [2020-10-14 09:14:57,368 INFO L226 Difference]: Without dead ends: 2832 [2020-10-14 09:14:57,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:14:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-14 09:14:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2048. [2020-10-14 09:14:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-10-14 09:14:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2830 transitions. [2020-10-14 09:14:57,477 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2830 transitions. Word has length 67 [2020-10-14 09:14:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:57,478 INFO L479 AbstractCegarLoop]: Abstraction has 2048 states and 2830 transitions. [2020-10-14 09:14:57,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2830 transitions. [2020-10-14 09:14:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:14:57,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:57,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:14:57,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:14:57,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash 193631573, now seen corresponding path program 1 times [2020-10-14 09:14:57,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:57,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534032094] [2020-10-14 09:14:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:02,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:15:02,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:15:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:15:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:02,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:15:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:15:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:15:05,078 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:15:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:15:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:05,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:15:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:15:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:15:05,157 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 09:15:05,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534032094] [2020-10-14 09:15:05,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:05,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:15:05,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351603582] [2020-10-14 09:15:05,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:05,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:05,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:05,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:05,161 INFO L87 Difference]: Start difference. First operand 2048 states and 2830 transitions. Second operand 6 states. [2020-10-14 09:15:07,315 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:15:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:17,539 INFO L93 Difference]: Finished difference Result 9599 states and 14042 transitions. [2020-10-14 09:15:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:15:17,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:15:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:17,577 INFO L225 Difference]: With dead ends: 9599 [2020-10-14 09:15:17,578 INFO L226 Difference]: Without dead ends: 7858 [2020-10-14 09:15:17,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:15:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2020-10-14 09:15:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 4652. [2020-10-14 09:15:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4652 states. [2020-10-14 09:15:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 6727 transitions. [2020-10-14 09:15:17,824 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 6727 transitions. Word has length 67 [2020-10-14 09:15:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:17,826 INFO L479 AbstractCegarLoop]: Abstraction has 4652 states and 6727 transitions. [2020-10-14 09:15:17,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 6727 transitions. [2020-10-14 09:15:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:15:17,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:17,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:15:17,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:15:17,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1878593112, now seen corresponding path program 1 times [2020-10-14 09:15:17,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:17,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384646605] [2020-10-14 09:15:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:22,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:22,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:15:22,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:15:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:25,316 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:15:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:15:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:25,399 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 09:15:25,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384646605] [2020-10-14 09:15:25,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:25,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:15:25,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757644943] [2020-10-14 09:15:25,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:25,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:25,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:25,401 INFO L87 Difference]: Start difference. First operand 4652 states and 6727 transitions. Second operand 6 states. [2020-10-14 09:15:27,571 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 603 [2020-10-14 09:15:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:34,982 INFO L93 Difference]: Finished difference Result 11206 states and 16406 transitions. [2020-10-14 09:15:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:15:34,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:15:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:35,019 INFO L225 Difference]: With dead ends: 11206 [2020-10-14 09:15:35,019 INFO L226 Difference]: Without dead ends: 7153 [2020-10-14 09:15:35,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:15:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2020-10-14 09:15:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7145. [2020-10-14 09:15:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7145 states. [2020-10-14 09:15:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 10326 transitions. [2020-10-14 09:15:35,469 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 10326 transitions. Word has length 67 [2020-10-14 09:15:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:35,469 INFO L479 AbstractCegarLoop]: Abstraction has 7145 states and 10326 transitions. [2020-10-14 09:15:35,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 10326 transitions. [2020-10-14 09:15:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:15:35,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:35,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:15:35,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:15:35,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:35,478 INFO L82 PathProgramCache]: Analyzing trace with hash 385819749, now seen corresponding path program 1 times [2020-10-14 09:15:35,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:35,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938731387] [2020-10-14 09:15:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:35,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:40,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:15:40,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:15:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:15:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:42,740 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:15:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:15:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:42,817 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 09:15:42,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938731387] [2020-10-14 09:15:42,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:42,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:15:42,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535546118] [2020-10-14 09:15:42,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:42,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:42,819 INFO L87 Difference]: Start difference. First operand 7145 states and 10326 transitions. Second operand 6 states. [2020-10-14 09:15:45,012 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 601 [2020-10-14 09:15:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:51,208 INFO L93 Difference]: Finished difference Result 16439 states and 23996 transitions. [2020-10-14 09:15:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:15:51,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:15:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:51,249 INFO L225 Difference]: With dead ends: 16439 [2020-10-14 09:15:51,249 INFO L226 Difference]: Without dead ends: 9722 [2020-10-14 09:15:51,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:15:51,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2020-10-14 09:15:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9682. [2020-10-14 09:15:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9682 states. [2020-10-14 09:15:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 14060 transitions. [2020-10-14 09:15:51,704 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 14060 transitions. Word has length 67 [2020-10-14 09:15:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:51,707 INFO L479 AbstractCegarLoop]: Abstraction has 9682 states and 14060 transitions. [2020-10-14 09:15:51,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 14060 transitions. [2020-10-14 09:15:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:15:51,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:51,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:15:51,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:15:51,716 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash 383917861, now seen corresponding path program 1 times [2020-10-14 09:15:51,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:51,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239028219] [2020-10-14 09:15:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:56,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:15:56,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:15:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:15:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:58,939 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:15:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:15:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:15:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:58,991 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 09:15:58,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239028219] [2020-10-14 09:15:58,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:58,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:15:58,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056454551] [2020-10-14 09:15:58,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:15:58,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:58,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:15:58,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:15:58,992 INFO L87 Difference]: Start difference. First operand 9682 states and 14060 transitions. Second operand 4 states. [2020-10-14 09:16:01,105 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:16:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:07,118 INFO L93 Difference]: Finished difference Result 25360 states and 37158 transitions. [2020-10-14 09:16:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:07,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:16:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:07,158 INFO L225 Difference]: With dead ends: 25360 [2020-10-14 09:16:07,158 INFO L226 Difference]: Without dead ends: 17140 [2020-10-14 09:16:07,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17140 states. [2020-10-14 09:16:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17140 to 17084. [2020-10-14 09:16:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17084 states. [2020-10-14 09:16:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17084 states to 17084 states and 24722 transitions. [2020-10-14 09:16:07,794 INFO L78 Accepts]: Start accepts. Automaton has 17084 states and 24722 transitions. Word has length 68 [2020-10-14 09:16:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:07,794 INFO L479 AbstractCegarLoop]: Abstraction has 17084 states and 24722 transitions. [2020-10-14 09:16:07,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17084 states and 24722 transitions. [2020-10-14 09:16:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:16:07,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:07,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:07,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:16:07,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:07,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1702703223, now seen corresponding path program 1 times [2020-10-14 09:16:07,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:07,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624702054] [2020-10-14 09:16:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:12,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:12,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:16:12,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:16:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:16:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:12,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:16:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:16:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:15,009 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:16:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:16:15,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:15,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:15,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:15,070 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 09:16:15,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624702054] [2020-10-14 09:16:15,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:15,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:15,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425435316] [2020-10-14 09:16:15,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:15,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:15,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:15,073 INFO L87 Difference]: Start difference. First operand 17084 states and 24722 transitions. Second operand 4 states. [2020-10-14 09:16:17,230 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:16:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:24,900 INFO L93 Difference]: Finished difference Result 45036 states and 65932 transitions. [2020-10-14 09:16:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:24,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:16:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:24,959 INFO L225 Difference]: With dead ends: 45036 [2020-10-14 09:16:24,960 INFO L226 Difference]: Without dead ends: 30194 [2020-10-14 09:16:24,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30194 states. [2020-10-14 09:16:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30194 to 30090. [2020-10-14 09:16:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30090 states. [2020-10-14 09:16:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30090 states to 30090 states and 43464 transitions. [2020-10-14 09:16:27,257 INFO L78 Accepts]: Start accepts. Automaton has 30090 states and 43464 transitions. Word has length 69 [2020-10-14 09:16:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:27,258 INFO L479 AbstractCegarLoop]: Abstraction has 30090 states and 43464 transitions. [2020-10-14 09:16:27,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30090 states and 43464 transitions. [2020-10-14 09:16:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:16:27,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:27,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:27,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:16:27,272 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash 234493500, now seen corresponding path program 1 times [2020-10-14 09:16:27,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:27,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353664162] [2020-10-14 09:16:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:32,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:32,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:16:32,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:16:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:16:32,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:32,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:16:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:16:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:16:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:34,549 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:16:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:34,616 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 09:16:34,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353664162] [2020-10-14 09:16:34,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:34,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:16:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916029480] [2020-10-14 09:16:34,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:16:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:16:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:16:34,619 INFO L87 Difference]: Start difference. First operand 30090 states and 43464 transitions. Second operand 7 states. [2020-10-14 09:16:36,790 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 605 [2020-10-14 09:16:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:48,891 INFO L93 Difference]: Finished difference Result 97627 states and 143131 transitions. [2020-10-14 09:16:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:16:48,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-14 09:16:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:49,038 INFO L225 Difference]: With dead ends: 97627 [2020-10-14 09:16:49,038 INFO L226 Difference]: Without dead ends: 72842 [2020-10-14 09:16:49,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 09:16:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72842 states. [2020-10-14 09:16:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72842 to 29638. [2020-10-14 09:16:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29638 states. [2020-10-14 09:16:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29638 states to 29638 states and 42869 transitions. [2020-10-14 09:16:50,845 INFO L78 Accepts]: Start accepts. Automaton has 29638 states and 42869 transitions. Word has length 69 [2020-10-14 09:16:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:50,845 INFO L479 AbstractCegarLoop]: Abstraction has 29638 states and 42869 transitions. [2020-10-14 09:16:50,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:16:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 29638 states and 42869 transitions. [2020-10-14 09:16:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:16:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:50,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:50,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:16:50,854 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1392488013, now seen corresponding path program 1 times [2020-10-14 09:16:50,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:50,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227058729] [2020-10-14 09:16:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:16:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:16:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:58,316 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:16:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:58,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:58,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:58,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:16:58,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:58,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:58,364 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 09:16:58,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227058729] [2020-10-14 09:16:58,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:58,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:58,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686988859] [2020-10-14 09:16:58,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:58,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:58,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:58,366 INFO L87 Difference]: Start difference. First operand 29638 states and 42869 transitions. Second operand 4 states. [2020-10-14 09:17:00,597 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:17:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:09,464 INFO L93 Difference]: Finished difference Result 79052 states and 115277 transitions. [2020-10-14 09:17:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:09,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:17:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:09,553 INFO L225 Difference]: With dead ends: 79052 [2020-10-14 09:17:09,554 INFO L226 Difference]: Without dead ends: 52648 [2020-10-14 09:17:09,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52648 states. [2020-10-14 09:17:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52648 to 52448. [2020-10-14 09:17:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52448 states. [2020-10-14 09:17:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52448 states to 52448 states and 75400 transitions. [2020-10-14 09:17:13,197 INFO L78 Accepts]: Start accepts. Automaton has 52448 states and 75400 transitions. Word has length 69 [2020-10-14 09:17:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:13,197 INFO L479 AbstractCegarLoop]: Abstraction has 52448 states and 75400 transitions. [2020-10-14 09:17:13,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 52448 states and 75400 transitions. [2020-10-14 09:17:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:17:13,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:13,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:13,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:17:13,211 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:13,211 INFO L82 PathProgramCache]: Analyzing trace with hash 635359451, now seen corresponding path program 1 times [2020-10-14 09:17:13,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:13,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846973380] [2020-10-14 09:17:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:13,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:17:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:17:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:17:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:20,364 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:17:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:20,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:17:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:20,438 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 09:17:20,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846973380] [2020-10-14 09:17:20,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:20,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:20,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944170235] [2020-10-14 09:17:20,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:17:20,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:20,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:17:20,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:20,439 INFO L87 Difference]: Start difference. First operand 52448 states and 75400 transitions. Second operand 6 states. [2020-10-14 09:17:22,700 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 603