/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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:12,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:12,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:12,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:12,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:12,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:12,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:12,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:12,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:12,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:12,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:12,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:12,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:12,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:12,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:12,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:12,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:12,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:12,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:12,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:12,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:12,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:12,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:12,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:12,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:12,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:12,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:12,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:12,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:12,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:12,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:12,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:12,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:12,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:12,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:12,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:12,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:12,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:12,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:12,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:12,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:12,642 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 04:16:12,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:12,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:12,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:12,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:12,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:12,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:12,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:12,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:12,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:12,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:12,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:12,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:12,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:12,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:12,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:12,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:12,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:12,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:12,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:12,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:12,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:12,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:12,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:12,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:12,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:12,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:12,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:12,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:12,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:12,669 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 04:16:12,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:12,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:12,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:12,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:12,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:12,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:16:13,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860d2e435/529b4de66a7644c4bde2c4105e0ee76a/FLAGfa6975c03 [2020-10-15 04:16:13,693 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:16:13,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:16:13,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860d2e435/529b4de66a7644c4bde2c4105e0ee76a/FLAGfa6975c03 [2020-10-15 04:16:13,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860d2e435/529b4de66a7644c4bde2c4105e0ee76a [2020-10-15 04:16:13,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:16:13,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:16:13,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:13,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:16:13,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:16:13,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:13" (1/1) ... [2020-10-15 04:16:13,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105f07e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:13, skipping insertion in model container [2020-10-15 04:16:13,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:13" (1/1) ... [2020-10-15 04:16:13,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:16:14,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:16:15,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:15,814 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:16:16,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:16,774 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:16:16,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16 WrapperNode [2020-10-15 04:16:16,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:16,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:16:16,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:16:16,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:16:16,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:16,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:16,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:16,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:16,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:17,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:17,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (1/1) ... [2020-10-15 04:16:17,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:16:17,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:16:17,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:16:17,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:16:17,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (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 04:16:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:16:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:16:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:16:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:16:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:16:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:16:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:16:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:16:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:16:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:16:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:16:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:16:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:16:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:16:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:16:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:16:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:16:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:16:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:16:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:16:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:16:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:16:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:16:20,825 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:16:20,825 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:16:20,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:20 BoogieIcfgContainer [2020-10-15 04:16:20,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:16:20,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:16:20,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:16:20,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:16:20,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:16:13" (1/3) ... [2020-10-15 04:16:20,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feeb3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:20, skipping insertion in model container [2020-10-15 04:16:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:16" (2/3) ... [2020-10-15 04:16:20,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feeb3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:20, skipping insertion in model container [2020-10-15 04:16:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:20" (3/3) ... [2020-10-15 04:16:20,846 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:16:20,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:16:20,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:16:20,882 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:16:20,911 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:16:20,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:16:20,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:16:20,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:16:20,912 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:16:20,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:16:20,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:16:20,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:16:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states. [2020-10-15 04:16:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-15 04:16:20,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:20,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:20,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -2033441387, now seen corresponding path program 1 times [2020-10-15 04:16:21,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:21,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357386690] [2020-10-15 04:16:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:27,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-15 04:16:27,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:16:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5274 [2020-10-15 04:16:27,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:27,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-15 04:16:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-15 04:16:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:16:28,561 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:16:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:28,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:28,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-15 04:16:28,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:28,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:29,000 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 04:16:29,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357386690] [2020-10-15 04:16:29,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:29,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:29,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705255358] [2020-10-15 04:16:29,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:29,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:29,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:29,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:29,030 INFO L87 Difference]: Start difference. First operand 1449 states. Second operand 4 states. [2020-10-15 04:16:29,865 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-10-15 04:16:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:40,007 INFO L93 Difference]: Finished difference Result 2488 states and 4423 transitions. [2020-10-15 04:16:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:40,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-10-15 04:16:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:40,050 INFO L225 Difference]: With dead ends: 2488 [2020-10-15 04:16:40,051 INFO L226 Difference]: Without dead ends: 2186 [2020-10-15 04:16:40,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-10-15 04:16:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2184. [2020-10-15 04:16:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-10-15 04:16:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3563 transitions. [2020-10-15 04:16:40,238 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3563 transitions. Word has length 496 [2020-10-15 04:16:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:40,242 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 3563 transitions. [2020-10-15 04:16:40,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:16:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3563 transitions. [2020-10-15 04:16:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-15 04:16:40,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:40,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:40,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:16:40,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash 426855444, now seen corresponding path program 1 times [2020-10-15 04:16:40,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:40,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929835979] [2020-10-15 04:16:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-15 04:16:46,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:16:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-15 04:16:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:46,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:46,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-15 04:16:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:16:47,787 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:16:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:47,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 04:16:47,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:47,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:48,292 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 04:16:48,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929835979] [2020-10-15 04:16:48,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:48,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:48,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667944321] [2020-10-15 04:16:48,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:48,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:48,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:48,299 INFO L87 Difference]: Start difference. First operand 2184 states and 3563 transitions. Second operand 5 states. [2020-10-15 04:17:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:04,480 INFO L93 Difference]: Finished difference Result 6412 states and 10443 transitions. [2020-10-15 04:17:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:04,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 496 [2020-10-15 04:17:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:04,508 INFO L225 Difference]: With dead ends: 6412 [2020-10-15 04:17:04,509 INFO L226 Difference]: Without dead ends: 4287 [2020-10-15 04:17:04,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4287 states. [2020-10-15 04:17:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4287 to 4285. [2020-10-15 04:17:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4285 states. [2020-10-15 04:17:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6958 transitions. [2020-10-15 04:17:04,685 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6958 transitions. Word has length 496 [2020-10-15 04:17:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:04,686 INFO L479 AbstractCegarLoop]: Abstraction has 4285 states and 6958 transitions. [2020-10-15 04:17:04,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6958 transitions. [2020-10-15 04:17:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-15 04:17:04,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:04,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:04,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:17:04,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash -267430399, now seen corresponding path program 1 times [2020-10-15 04:17:04,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:04,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732169128] [2020-10-15 04:17:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:10,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-15 04:17:10,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:17:10,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-15 04:17:10,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:10,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-15 04:17:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:11,472 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:17:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:11,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 04:17:11,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:11,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:12,240 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 04:17:12,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732169128] [2020-10-15 04:17:12,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:12,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:12,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887508957] [2020-10-15 04:17:12,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:12,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:12,245 INFO L87 Difference]: Start difference. First operand 4285 states and 6958 transitions. Second operand 5 states. [2020-10-15 04:17:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:25,923 INFO L93 Difference]: Finished difference Result 12735 states and 20675 transitions. [2020-10-15 04:17:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:25,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 498 [2020-10-15 04:17:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:25,964 INFO L225 Difference]: With dead ends: 12735 [2020-10-15 04:17:25,964 INFO L226 Difference]: Without dead ends: 8467 [2020-10-15 04:17:25,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8467 states. [2020-10-15 04:17:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8467 to 8465. [2020-10-15 04:17:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8465 states. [2020-10-15 04:17:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 13691 transitions. [2020-10-15 04:17:26,272 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 13691 transitions. Word has length 498 [2020-10-15 04:17:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:26,273 INFO L479 AbstractCegarLoop]: Abstraction has 8465 states and 13691 transitions. [2020-10-15 04:17:26,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 13691 transitions. [2020-10-15 04:17:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-15 04:17:26,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:26,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:26,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:17:26,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1791155550, now seen corresponding path program 1 times [2020-10-15 04:17:26,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:26,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814093450] [2020-10-15 04:17:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:31,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-15 04:17:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:17:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-15 04:17:31,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:31,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:17:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 272 [2020-10-15 04:17:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:32,750 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:17:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 04:17:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:32,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:33,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814093450] [2020-10-15 04:17:33,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:33,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:33,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184231121] [2020-10-15 04:17:33,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:33,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:33,250 INFO L87 Difference]: Start difference. First operand 8465 states and 13691 transitions. Second operand 4 states. [2020-10-15 04:17:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:50,912 INFO L93 Difference]: Finished difference Result 24767 states and 39965 transitions. [2020-10-15 04:17:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:17:50,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 500 [2020-10-15 04:17:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:50,975 INFO L225 Difference]: With dead ends: 24767 [2020-10-15 04:17:50,975 INFO L226 Difference]: Without dead ends: 16589 [2020-10-15 04:17:50,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16589 states. [2020-10-15 04:17:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16589 to 16587. [2020-10-15 04:17:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16587 states. [2020-10-15 04:17:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16587 states to 16587 states and 26697 transitions. [2020-10-15 04:17:51,546 INFO L78 Accepts]: Start accepts. Automaton has 16587 states and 26697 transitions. Word has length 500 [2020-10-15 04:17:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:51,546 INFO L479 AbstractCegarLoop]: Abstraction has 16587 states and 26697 transitions. [2020-10-15 04:17:51,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 16587 states and 26697 transitions. [2020-10-15 04:17:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-15 04:17:51,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:51,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:51,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:17:51,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1758545506, now seen corresponding path program 1 times [2020-10-15 04:17:51,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:51,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611198430] [2020-10-15 04:17:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-15 04:17:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:17:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-15 04:17:56,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:56,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:17:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 04:17:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:17:57,733 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:17:57,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:17:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:57,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:58,014 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 04:17:58,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611198430] [2020-10-15 04:17:58,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:58,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:58,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436971678] [2020-10-15 04:17:58,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:58,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:58,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:58,018 INFO L87 Difference]: Start difference. First operand 16587 states and 26697 transitions. Second operand 4 states. [2020-10-15 04:18:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:16,740 INFO L93 Difference]: Finished difference Result 48836 states and 78475 transitions. [2020-10-15 04:18:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:16,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 501 [2020-10-15 04:18:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:16,811 INFO L225 Difference]: With dead ends: 48836 [2020-10-15 04:18:16,811 INFO L226 Difference]: Without dead ends: 32814 [2020-10-15 04:18:16,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32814 states. [2020-10-15 04:18:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32814 to 32812. [2020-10-15 04:18:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32812 states. [2020-10-15 04:18:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32812 states to 32812 states and 52609 transitions. [2020-10-15 04:18:18,128 INFO L78 Accepts]: Start accepts. Automaton has 32812 states and 52609 transitions. Word has length 501 [2020-10-15 04:18:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:18,129 INFO L479 AbstractCegarLoop]: Abstraction has 32812 states and 52609 transitions. [2020-10-15 04:18:18,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 32812 states and 52609 transitions. [2020-10-15 04:18:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-15 04:18:18,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:18,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:18,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:18:18,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:18,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1725808386, now seen corresponding path program 1 times [2020-10-15 04:18:18,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:18,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163037133] [2020-10-15 04:18:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:23,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:18:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-15 04:18:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:24,102 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:18:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:18:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:24,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:24,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163037133] [2020-10-15 04:18:24,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:24,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:24,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154580736] [2020-10-15 04:18:24,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:24,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:24,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:24,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:24,367 INFO L87 Difference]: Start difference. First operand 32812 states and 52609 transitions. Second operand 4 states. [2020-10-15 04:18:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:44,146 INFO L93 Difference]: Finished difference Result 95973 states and 153459 transitions. [2020-10-15 04:18:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:44,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 502 [2020-10-15 04:18:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:44,298 INFO L225 Difference]: With dead ends: 95973 [2020-10-15 04:18:44,298 INFO L226 Difference]: Without dead ends: 64451 [2020-10-15 04:18:44,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64451 states. [2020-10-15 04:18:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64451 to 64449. [2020-10-15 04:18:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64449 states. [2020-10-15 04:18:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64449 states to 64449 states and 102831 transitions. [2020-10-15 04:18:46,367 INFO L78 Accepts]: Start accepts. Automaton has 64449 states and 102831 transitions. Word has length 502 [2020-10-15 04:18:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:46,368 INFO L479 AbstractCegarLoop]: Abstraction has 64449 states and 102831 transitions. [2020-10-15 04:18:46,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 64449 states and 102831 transitions. [2020-10-15 04:18:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-15 04:18:46,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:46,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:46,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:18:46,448 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:46,448 INFO L82 PathProgramCache]: Analyzing trace with hash 562429657, now seen corresponding path program 1 times [2020-10-15 04:18:46,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:46,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033717222] [2020-10-15 04:18:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:51,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:18:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-15 04:18:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:52,319 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:18:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:52,571 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 04:18:52,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033717222] [2020-10-15 04:18:52,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:52,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:52,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398643651] [2020-10-15 04:18:52,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:52,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:52,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:52,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:52,574 INFO L87 Difference]: Start difference. First operand 64449 states and 102831 transitions. Second operand 4 states. [2020-10-15 04:19:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:14,121 INFO L93 Difference]: Finished difference Result 188836 states and 300532 transitions. [2020-10-15 04:19:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:19:14,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 502 [2020-10-15 04:19:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:14,309 INFO L225 Difference]: With dead ends: 188836 [2020-10-15 04:19:14,309 INFO L226 Difference]: Without dead ends: 126678 [2020-10-15 04:19:14,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126678 states. [2020-10-15 04:19:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126678 to 126676. [2020-10-15 04:19:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126676 states. [2020-10-15 04:19:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126676 states to 126676 states and 201130 transitions. [2020-10-15 04:19:20,369 INFO L78 Accepts]: Start accepts. Automaton has 126676 states and 201130 transitions. Word has length 502 [2020-10-15 04:19:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:20,370 INFO L479 AbstractCegarLoop]: Abstraction has 126676 states and 201130 transitions. [2020-10-15 04:19:20,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:19:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 126676 states and 201130 transitions. [2020-10-15 04:19:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-15 04:19:20,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:20,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:20,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:19:20,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:20,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1236663134, now seen corresponding path program 1 times [2020-10-15 04:19:20,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:20,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803608111] [2020-10-15 04:19:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:25,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:25,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-15 04:19:25,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:19:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:19:25,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:25,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:19:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:19:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 04:19:25,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:26,504 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-15 04:19:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:19:26,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:26,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:26,780 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 04:19:26,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803608111] [2020-10-15 04:19:26,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:26,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:19:26,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497289883] [2020-10-15 04:19:26,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:19:26,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:19:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:26,782 INFO L87 Difference]: Start difference. First operand 126676 states and 201130 transitions. Second operand 5 states.