/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:11:18,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:11:18,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:11:18,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:11:18,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:11:18,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:11:18,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:11:18,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:11:18,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:11:18,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:11:18,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:11:18,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:11:18,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:11:18,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:11:18,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:11:18,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:11:18,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:11:18,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:11:18,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:11:18,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:11:18,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:11:18,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:11:18,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:11:18,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:11:18,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:11:18,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:11:18,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:11:18,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:11:18,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:11:18,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:11:18,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:11:18,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:11:18,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:11:18,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:11:18,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:11:18,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:11:18,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:11:18,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:11:18,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:11:18,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:11:18,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:11:18,519 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 [2020-10-15 04:11:18,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:11:18,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:11:18,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:11:18,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:11:18,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:11:18,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:11:18,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:11:18,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:11:18,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:11:18,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:11:18,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:11:18,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:11:18,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:11:18,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:11:18,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:11:18,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:11:18,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:11:18,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:11:18,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:11:18,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:11:18,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:11:18,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:11:18,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:11:18,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:11:18,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:11:18,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:11:18,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:11:18,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:11:18,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:11:18,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:11:18,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:11:18,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:11:18,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:11:18,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:11:18,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:11:18,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 04:11:18,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9490f2be9/685f2db515084706b9fc97f8fdecacf8/FLAG1e5876c26 [2020-10-15 04:11:19,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:11:19,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 04:11:19,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9490f2be9/685f2db515084706b9fc97f8fdecacf8/FLAG1e5876c26 [2020-10-15 04:11:19,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9490f2be9/685f2db515084706b9fc97f8fdecacf8 [2020-10-15 04:11:19,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:11:19,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:11:19,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:11:19,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:11:19,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:11:19,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:11:19" (1/1) ... [2020-10-15 04:11:19,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8f1d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:19, skipping insertion in model container [2020-10-15 04:11:19,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:11:19" (1/1) ... [2020-10-15 04:11:19,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:11:19,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:11:21,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:11:21,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:11:22,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:11:22,409 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:11:22,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22 WrapperNode [2020-10-15 04:11:22,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:11:22,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:11:22,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:11:22,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:11:22,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (1/1) ... [2020-10-15 04:11:22,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:11:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:11:22,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:11:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:11:22,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (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 [2020-10-15 04:11:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:11:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:11:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:11:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:11:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:11:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:11:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:11:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:11:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:11:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:11:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:11:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:11:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:11:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:11:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:11:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:11:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:11:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:11:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:11:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:11:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:11:25,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:11:25,954 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:11:25,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:11:25 BoogieIcfgContainer [2020-10-15 04:11:25,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:11:25,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:11:25,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:11:25,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:11:25,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:11:19" (1/3) ... [2020-10-15 04:11:25,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18871013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:11:25, skipping insertion in model container [2020-10-15 04:11:25,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:11:22" (2/3) ... [2020-10-15 04:11:25,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18871013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:11:25, skipping insertion in model container [2020-10-15 04:11:25,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:11:25" (3/3) ... [2020-10-15 04:11:25,974 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 04:11:26,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:11:26,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-15 04:11:26,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-15 04:11:26,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:11:26,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:11:26,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:11:26,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:11:26,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:11:26,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:11:26,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:11:26,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:11:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states. [2020-10-15 04:11:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 04:11:26,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:26,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:26,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash -330341000, now seen corresponding path program 1 times [2020-10-15 04:11:26,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:26,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428093024] [2020-10-15 04:11:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:32,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:32,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:11:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:11:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:11:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-15 04:11:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-15 04:11:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:11:33,194 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:11:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:11:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:33,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428093024] [2020-10-15 04:11:33,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:33,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:33,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418161603] [2020-10-15 04:11:33,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:33,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:33,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:33,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:33,518 INFO L87 Difference]: Start difference. First operand 973 states. Second operand 4 states. [2020-10-15 04:11:34,206 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-15 04:11:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:41,726 INFO L93 Difference]: Finished difference Result 1688 states and 2997 transitions. [2020-10-15 04:11:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:41,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-15 04:11:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:41,759 INFO L225 Difference]: With dead ends: 1688 [2020-10-15 04:11:41,760 INFO L226 Difference]: Without dead ends: 1396 [2020-10-15 04:11:41,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-10-15 04:11:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1394. [2020-10-15 04:11:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-15 04:11:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2142 transitions. [2020-10-15 04:11:41,908 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2142 transitions. Word has length 314 [2020-10-15 04:11:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:41,912 INFO L479 AbstractCegarLoop]: Abstraction has 1394 states and 2142 transitions. [2020-10-15 04:11:41,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2142 transitions. [2020-10-15 04:11:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 04:11:41,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:41,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:41,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:11:41,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:41,932 INFO L82 PathProgramCache]: Analyzing trace with hash -790230574, now seen corresponding path program 1 times [2020-10-15 04:11:41,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:41,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483591748] [2020-10-15 04:11:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:11:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:11:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-15 04:11:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:47,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-15 04:11:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-15 04:11:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:11:48,439 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:11:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:48,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:11:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:48,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:48,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483591748] [2020-10-15 04:11:48,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:48,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:48,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736553919] [2020-10-15 04:11:48,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:48,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:48,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:48,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:48,811 INFO L87 Difference]: Start difference. First operand 1394 states and 2142 transitions. Second operand 4 states. [2020-10-15 04:11:49,408 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-15 04:11:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:56,697 INFO L93 Difference]: Finished difference Result 2687 states and 4182 transitions. [2020-10-15 04:11:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:56,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-15 04:11:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:56,722 INFO L225 Difference]: With dead ends: 2687 [2020-10-15 04:11:56,722 INFO L226 Difference]: Without dead ends: 2332 [2020-10-15 04:11:56,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2020-10-15 04:11:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2330. [2020-10-15 04:11:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2020-10-15 04:11:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3606 transitions. [2020-10-15 04:11:56,848 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3606 transitions. Word has length 314 [2020-10-15 04:11:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:56,849 INFO L479 AbstractCegarLoop]: Abstraction has 2330 states and 3606 transitions. [2020-10-15 04:11:56,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3606 transitions. [2020-10-15 04:11:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 04:11:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:56,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:56,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:11:56,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:56,871 INFO L82 PathProgramCache]: Analyzing trace with hash -790569198, now seen corresponding path program 1 times [2020-10-15 04:11:56,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:56,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821240685] [2020-10-15 04:11:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:12:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:12:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-15 04:12:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:02,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-15 04:12:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:12:03,281 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:12:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:03,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:03,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:03,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:12:03,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:03,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:03,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821240685] [2020-10-15 04:12:03,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:03,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:03,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265353758] [2020-10-15 04:12:03,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:03,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:03,797 INFO L87 Difference]: Start difference. First operand 2330 states and 3606 transitions. Second operand 5 states. [2020-10-15 04:12:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:12,873 INFO L93 Difference]: Finished difference Result 6903 states and 10675 transitions. [2020-10-15 04:12:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:12,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-15 04:12:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:12,899 INFO L225 Difference]: With dead ends: 6903 [2020-10-15 04:12:12,899 INFO L226 Difference]: Without dead ends: 4588 [2020-10-15 04:12:12,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2020-10-15 04:12:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4433. [2020-10-15 04:12:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4433 states. [2020-10-15 04:12:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6854 transitions. [2020-10-15 04:12:13,079 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6854 transitions. Word has length 314 [2020-10-15 04:12:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:13,079 INFO L479 AbstractCegarLoop]: Abstraction has 4433 states and 6854 transitions. [2020-10-15 04:12:13,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6854 transitions. [2020-10-15 04:12:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-15 04:12:13,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:13,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:13,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:12:13,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1795399763, now seen corresponding path program 1 times [2020-10-15 04:12:13,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:13,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959517756] [2020-10-15 04:12:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-15 04:12:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:12:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:12:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-15 04:12:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:18,869 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:12:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:12:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:19,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959517756] [2020-10-15 04:12:19,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:19,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:19,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143024400] [2020-10-15 04:12:19,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:19,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:19,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:19,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:19,141 INFO L87 Difference]: Start difference. First operand 4433 states and 6854 transitions. Second operand 5 states. [2020-10-15 04:12:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:27,946 INFO L93 Difference]: Finished difference Result 13112 states and 20242 transitions. [2020-10-15 04:12:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:27,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-15 04:12:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:27,986 INFO L225 Difference]: With dead ends: 13112 [2020-10-15 04:12:27,986 INFO L226 Difference]: Without dead ends: 8701 [2020-10-15 04:12:27,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8701 states. [2020-10-15 04:12:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8701 to 8590. [2020-10-15 04:12:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8590 states. [2020-10-15 04:12:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 13214 transitions. [2020-10-15 04:12:28,333 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 13214 transitions. Word has length 316 [2020-10-15 04:12:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:28,333 INFO L479 AbstractCegarLoop]: Abstraction has 8590 states and 13214 transitions. [2020-10-15 04:12:28,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 13214 transitions. [2020-10-15 04:12:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-15 04:12:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:28,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:28,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:12:28,354 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash 46948942, now seen corresponding path program 1 times [2020-10-15 04:12:28,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:28,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117516282] [2020-10-15 04:12:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:33,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:33,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-15 04:12:33,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:12:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:12:33,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:33,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:33,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-15 04:12:33,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:34,153 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:12:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:34,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:12:34,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:34,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117516282] [2020-10-15 04:12:34,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:34,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:34,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769934593] [2020-10-15 04:12:34,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:34,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:34,340 INFO L87 Difference]: Start difference. First operand 8590 states and 13214 transitions. Second operand 5 states. [2020-10-15 04:12:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:44,259 INFO L93 Difference]: Finished difference Result 25134 states and 38554 transitions. [2020-10-15 04:12:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:44,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-15 04:12:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:44,321 INFO L225 Difference]: With dead ends: 25134 [2020-10-15 04:12:44,321 INFO L226 Difference]: Without dead ends: 16803 [2020-10-15 04:12:44,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16803 states. [2020-10-15 04:12:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16803 to 16632. [2020-10-15 04:12:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16632 states. [2020-10-15 04:12:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16632 states to 16632 states and 25440 transitions. [2020-10-15 04:12:45,110 INFO L78 Accepts]: Start accepts. Automaton has 16632 states and 25440 transitions. Word has length 318 [2020-10-15 04:12:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:45,110 INFO L479 AbstractCegarLoop]: Abstraction has 16632 states and 25440 transitions. [2020-10-15 04:12:45,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:45,111 INFO L276 IsEmpty]: Start isEmpty. Operand 16632 states and 25440 transitions. [2020-10-15 04:12:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-15 04:12:45,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:45,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:45,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:12:45,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash 786602115, now seen corresponding path program 1 times [2020-10-15 04:12:45,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:45,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329005085] [2020-10-15 04:12:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-15 04:12:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:12:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:12:50,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:50,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 04:12:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:50,890 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:12:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:50,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:50,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:12:50,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:50,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:51,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329005085] [2020-10-15 04:12:51,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:51,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:51,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650381243] [2020-10-15 04:12:51,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:51,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:51,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:51,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:51,057 INFO L87 Difference]: Start difference. First operand 16632 states and 25440 transitions. Second operand 5 states. [2020-10-15 04:13:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:01,933 INFO L93 Difference]: Finished difference Result 48643 states and 74160 transitions. [2020-10-15 04:13:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:01,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-15 04:13:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:01,997 INFO L225 Difference]: With dead ends: 48643 [2020-10-15 04:13:01,997 INFO L226 Difference]: Without dead ends: 32444 [2020-10-15 04:13:02,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32444 states. [2020-10-15 04:13:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32444 to 32365. [2020-10-15 04:13:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32365 states. [2020-10-15 04:13:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32365 states to 32365 states and 49125 transitions. [2020-10-15 04:13:03,422 INFO L78 Accepts]: Start accepts. Automaton has 32365 states and 49125 transitions. Word has length 320 [2020-10-15 04:13:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:03,422 INFO L479 AbstractCegarLoop]: Abstraction has 32365 states and 49125 transitions. [2020-10-15 04:13:03,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 32365 states and 49125 transitions. [2020-10-15 04:13:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-15 04:13:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:03,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:03,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:13:03,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash -892579476, now seen corresponding path program 1 times [2020-10-15 04:13:03,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:03,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148356123] [2020-10-15 04:13:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:08,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-15 04:13:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:09,324 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:13:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:09,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148356123] [2020-10-15 04:13:09,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:09,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:09,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827323151] [2020-10-15 04:13:09,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:09,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:09,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:09,563 INFO L87 Difference]: Start difference. First operand 32365 states and 49125 transitions. Second operand 5 states. [2020-10-15 04:13:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:20,172 INFO L93 Difference]: Finished difference Result 92190 states and 139630 transitions. [2020-10-15 04:13:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:20,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-15 04:13:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:20,304 INFO L225 Difference]: With dead ends: 92190 [2020-10-15 04:13:20,304 INFO L226 Difference]: Without dead ends: 59993 [2020-10-15 04:13:20,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59993 states. [2020-10-15 04:13:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59993 to 59890. [2020-10-15 04:13:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59890 states. [2020-10-15 04:13:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59890 states to 59890 states and 90086 transitions. [2020-10-15 04:13:24,595 INFO L78 Accepts]: Start accepts. Automaton has 59890 states and 90086 transitions. Word has length 322 [2020-10-15 04:13:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:24,595 INFO L479 AbstractCegarLoop]: Abstraction has 59890 states and 90086 transitions. [2020-10-15 04:13:24,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 59890 states and 90086 transitions. [2020-10-15 04:13:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-15 04:13:24,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:24,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:24,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:13:24,661 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:24,662 INFO L82 PathProgramCache]: Analyzing trace with hash -45520098, now seen corresponding path program 1 times [2020-10-15 04:13:24,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:24,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541877342] [2020-10-15 04:13:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-15 04:13:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:13:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:13:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:29,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-15 04:13:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:30,419 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:13:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:30,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:13:30,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:30,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:30,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541877342] [2020-10-15 04:13:30,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:30,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:30,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882266503] [2020-10-15 04:13:30,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:30,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:30,713 INFO L87 Difference]: Start difference. First operand 59890 states and 90086 transitions. Second operand 5 states. [2020-10-15 04:13:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:47,579 INFO L93 Difference]: Finished difference Result 174980 states and 262234 transitions. [2020-10-15 04:13:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:47,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-15 04:13:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:47,770 INFO L225 Difference]: With dead ends: 174980 [2020-10-15 04:13:47,770 INFO L226 Difference]: Without dead ends: 116865 [2020-10-15 04:13:47,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:48,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116865 states. [2020-10-15 04:13:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116865 to 116352. [2020-10-15 04:13:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116352 states. [2020-10-15 04:13:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116352 states to 116352 states and 173620 transitions. [2020-10-15 04:13:57,235 INFO L78 Accepts]: Start accepts. Automaton has 116352 states and 173620 transitions. Word has length 324 [2020-10-15 04:13:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:57,236 INFO L479 AbstractCegarLoop]: Abstraction has 116352 states and 173620 transitions. [2020-10-15 04:13:57,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 116352 states and 173620 transitions. [2020-10-15 04:13:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:13:57,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:57,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:57,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:13:57,329 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1871081601, now seen corresponding path program 1 times [2020-10-15 04:13:57,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:57,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12419031] [2020-10-15 04:13:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:14:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:03,041 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:14:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:14:03,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:03,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:03,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:14:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:03,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12419031] [2020-10-15 04:14:03,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:03,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:14:03,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959558315] [2020-10-15 04:14:03,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:14:03,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:03,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:14:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:14:03,229 INFO L87 Difference]: Start difference. First operand 116352 states and 173620 transitions. Second operand 4 states. [2020-10-15 04:14:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:26,547 INFO L93 Difference]: Finished difference Result 341770 states and 508592 transitions. [2020-10-15 04:14:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:14:26,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:14:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:26,804 INFO L225 Difference]: With dead ends: 341770 [2020-10-15 04:14:26,804 INFO L226 Difference]: Without dead ends: 227029 [2020-10-15 04:14:26,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:14:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227029 states. [2020-10-15 04:14:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227029 to 226516. [2020-10-15 04:14:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226516 states. [2020-10-15 04:14:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226516 states to 226516 states and 335220 transitions. [2020-10-15 04:14:40,922 INFO L78 Accepts]: Start accepts. Automaton has 226516 states and 335220 transitions. Word has length 326 [2020-10-15 04:14:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:40,923 INFO L479 AbstractCegarLoop]: Abstraction has 226516 states and 335220 transitions. [2020-10-15 04:14:40,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:14:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 226516 states and 335220 transitions. [2020-10-15 04:14:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:14:41,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:41,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:41,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:14:41,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:41,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1277289604, now seen corresponding path program 1 times [2020-10-15 04:14:41,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:41,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738124791] [2020-10-15 04:14:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:14:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:14:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 04:14:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:46,794 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-15 04:14:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:46,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:46,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738124791] [2020-10-15 04:14:46,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:46,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:46,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872841833] [2020-10-15 04:14:46,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:46,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:46,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:46,924 INFO L87 Difference]: Start difference. First operand 226516 states and 335220 transitions. Second operand 5 states.