/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:21:27,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:21:27,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:21:27,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:21:27,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:21:27,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:21:27,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:21:27,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:21:27,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:21:27,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:21:27,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:21:27,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:21:27,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:21:27,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:21:27,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:21:27,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:21:27,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:21:27,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:21:27,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:21:27,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:21:27,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:21:27,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:21:27,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:21:27,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:21:27,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:21:27,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:21:27,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:21:27,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:21:27,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:21:27,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:21:27,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:21:27,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:21:27,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:21:27,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:21:27,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:21:27,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:21:27,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:21:27,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:21:27,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:21:27,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:21:27,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:21:27,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:21:27,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:21:27,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:21:27,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:21:27,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:21:27,641 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:21:27,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:21:27,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:21:27,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:21:27,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:21:27,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:21:27,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:21:27,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:21:27,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:21:27,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:21:27,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:21:27,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:21:27,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:21:27,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:21:27,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:21:27,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:21:27,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:21:27,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:21:27,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:21:27,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:21:27,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:21:27,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:21:27,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:21:27,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:21:27,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:21:27,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:21:27,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:21:27,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:21:27,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:21:27,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:21:27,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:21:27,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:21:28,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3ba0252/c3331e2a42e0457fb856f58a4e491958/FLAGa9c91d483 [2020-10-14 09:21:28,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:21:28,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:21:28,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3ba0252/c3331e2a42e0457fb856f58a4e491958/FLAGa9c91d483 [2020-10-14 09:21:28,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3ba0252/c3331e2a42e0457fb856f58a4e491958 [2020-10-14 09:21:28,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:21:28,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:21:28,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:21:28,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:21:28,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:21:28,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:28" (1/1) ... [2020-10-14 09:21:28,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103260cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:28, skipping insertion in model container [2020-10-14 09:21:28,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:28" (1/1) ... [2020-10-14 09:21:28,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:21:28,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:21:29,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:21:29,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:21:29,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:21:29,662 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:21:29,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29 WrapperNode [2020-10-14 09:21:29,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:21:29,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:21:29,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:21:29,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:21:29,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... [2020-10-14 09:21:29,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:21:29,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:21:29,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:21:29,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:21:29,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:21:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:21:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:21:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:21:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:21:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:21:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:21:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:21:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:21:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:21:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:21:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:21:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:21:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:21:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:21:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:21:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:21:30,885 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:21:30,885 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:21:30,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:30 BoogieIcfgContainer [2020-10-14 09:21:30,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:21:30,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:21:30,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:21:30,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:21:30,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:21:28" (1/3) ... [2020-10-14 09:21:30,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35733964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:30, skipping insertion in model container [2020-10-14 09:21:30,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:29" (2/3) ... [2020-10-14 09:21:30,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35733964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:30, skipping insertion in model container [2020-10-14 09:21:30,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:30" (3/3) ... [2020-10-14 09:21:30,899 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:21:30,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:21:30,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:21:30,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:21:30,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:21:30,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:21:30,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:21:30,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:21:30,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:21:30,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:21:30,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:21:30,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:21:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2020-10-14 09:21:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 09:21:30,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:30,991 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] [2020-10-14 09:21:30,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash 534685997, now seen corresponding path program 1 times [2020-10-14 09:21:31,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:31,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899293105] [2020-10-14 09:21:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:36,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 09:21:36,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:21:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 09:21:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:36,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 09:21:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:21:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:21:37,068 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:21:37,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:37,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:37,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:21:37,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:37,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:37,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899293105] [2020-10-14 09:21:37,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:37,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:37,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92695311] [2020-10-14 09:21:37,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:37,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:37,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:37,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:37,187 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2020-10-14 09:21:37,585 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:21:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:38,894 INFO L93 Difference]: Finished difference Result 510 states and 840 transitions. [2020-10-14 09:21:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:38,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 09:21:38,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:38,915 INFO L225 Difference]: With dead ends: 510 [2020-10-14 09:21:38,915 INFO L226 Difference]: Without dead ends: 386 [2020-10-14 09:21:38,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-14 09:21:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 384. [2020-10-14 09:21:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-14 09:21:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 572 transitions. [2020-10-14 09:21:39,012 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 572 transitions. Word has length 100 [2020-10-14 09:21:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:39,013 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 572 transitions. [2020-10-14 09:21:39,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 572 transitions. [2020-10-14 09:21:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 09:21:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:39,025 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] [2020-10-14 09:21:39,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:21:39,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash -927897771, now seen corresponding path program 1 times [2020-10-14 09:21:39,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:39,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144274905] [2020-10-14 09:21:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:40,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 09:21:40,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:21:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1659 [2020-10-14 09:21:40,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:40,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:21:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 09:21:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:21:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:41,059 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:21:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:41,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:41,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:41,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:41,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:21:41,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:41,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:41,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144274905] [2020-10-14 09:21:41,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:41,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:21:41,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371041962] [2020-10-14 09:21:41,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:21:41,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:41,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:21:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:41,107 INFO L87 Difference]: Start difference. First operand 384 states and 572 transitions. Second operand 5 states. [2020-10-14 09:21:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:42,307 INFO L93 Difference]: Finished difference Result 593 states and 902 transitions. [2020-10-14 09:21:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:21:42,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 09:21:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:42,313 INFO L225 Difference]: With dead ends: 593 [2020-10-14 09:21:42,313 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 09:21:42,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 09:21:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 386. [2020-10-14 09:21:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-14 09:21:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 574 transitions. [2020-10-14 09:21:42,342 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 574 transitions. Word has length 101 [2020-10-14 09:21:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:42,342 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 574 transitions. [2020-10-14 09:21:42,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:21:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 574 transitions. [2020-10-14 09:21:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 09:21:42,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:42,344 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] [2020-10-14 09:21:42,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:21:42,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1624153062, now seen corresponding path program 1 times [2020-10-14 09:21:42,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:42,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692178024] [2020-10-14 09:21:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:44,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 09:21:44,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:21:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-14 09:21:44,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:44,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:21:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:21:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 09:21:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:21:44,815 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:21:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:21:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:44,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:44,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692178024] [2020-10-14 09:21:44,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:44,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:21:44,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212653552] [2020-10-14 09:21:44,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:21:44,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:44,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:21:44,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:44,903 INFO L87 Difference]: Start difference. First operand 386 states and 574 transitions. Second operand 5 states. [2020-10-14 09:21:45,152 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-14 09:21:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:46,356 INFO L93 Difference]: Finished difference Result 817 states and 1255 transitions. [2020-10-14 09:21:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:21:46,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 09:21:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:46,365 INFO L225 Difference]: With dead ends: 817 [2020-10-14 09:21:46,365 INFO L226 Difference]: Without dead ends: 595 [2020-10-14 09:21:46,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-14 09:21:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2020-10-14 09:21:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-14 09:21:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 901 transitions. [2020-10-14 09:21:46,407 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 901 transitions. Word has length 102 [2020-10-14 09:21:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:46,408 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 901 transitions. [2020-10-14 09:21:46,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:21:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 901 transitions. [2020-10-14 09:21:46,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:46,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:46,415 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] [2020-10-14 09:21:46,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:21:46,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1721624648, now seen corresponding path program 1 times [2020-10-14 09:21:46,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:46,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998512756] [2020-10-14 09:21:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:21:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:51,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:21:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:21:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:51,744 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:21:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:21:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:51,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998512756] [2020-10-14 09:21:51,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:51,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:51,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558705340] [2020-10-14 09:21:51,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:51,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:51,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:51,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:51,791 INFO L87 Difference]: Start difference. First operand 593 states and 901 transitions. Second operand 4 states. [2020-10-14 09:21:52,031 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:21:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:53,204 INFO L93 Difference]: Finished difference Result 1585 states and 2465 transitions. [2020-10-14 09:21:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:53,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:53,212 INFO L225 Difference]: With dead ends: 1585 [2020-10-14 09:21:53,213 INFO L226 Difference]: Without dead ends: 1104 [2020-10-14 09:21:53,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-10-14 09:21:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1102. [2020-10-14 09:21:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-14 09:21:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1692 transitions. [2020-10-14 09:21:53,270 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1692 transitions. Word has length 103 [2020-10-14 09:21:53,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:53,270 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1692 transitions. [2020-10-14 09:21:53,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1692 transitions. [2020-10-14 09:21:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:53,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:53,273 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] [2020-10-14 09:21:53,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:21:53,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:53,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1124009466, now seen corresponding path program 1 times [2020-10-14 09:21:53,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:53,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124160876] [2020-10-14 09:21:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:58,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:58,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:21:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:58,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 09:21:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:21:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:58,561 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:21:58,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:58,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:58,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:58,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:21:58,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:58,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:58,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124160876] [2020-10-14 09:21:58,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:58,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:58,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542454017] [2020-10-14 09:21:58,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:58,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:58,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:58,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:58,621 INFO L87 Difference]: Start difference. First operand 1102 states and 1692 transitions. Second operand 4 states. [2020-10-14 09:21:58,945 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:00,340 INFO L93 Difference]: Finished difference Result 2948 states and 4589 transitions. [2020-10-14 09:22:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:00,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:22:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:00,354 INFO L225 Difference]: With dead ends: 2948 [2020-10-14 09:22:00,354 INFO L226 Difference]: Without dead ends: 2030 [2020-10-14 09:22:00,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-10-14 09:22:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2028. [2020-10-14 09:22:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2020-10-14 09:22:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3114 transitions. [2020-10-14 09:22:00,473 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3114 transitions. Word has length 103 [2020-10-14 09:22:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:00,473 INFO L479 AbstractCegarLoop]: Abstraction has 2028 states and 3114 transitions. [2020-10-14 09:22:00,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3114 transitions. [2020-10-14 09:22:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:22:00,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:00,476 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] [2020-10-14 09:22:00,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:22:00,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:00,477 INFO L82 PathProgramCache]: Analyzing trace with hash -195236115, now seen corresponding path program 1 times [2020-10-14 09:22:00,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:00,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643461965] [2020-10-14 09:22:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:05,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:22:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:22:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:05,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 09:22:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:22:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:05,797 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:05,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:22:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:05,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643461965] [2020-10-14 09:22:05,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:05,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:05,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805933542] [2020-10-14 09:22:05,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:05,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:05,855 INFO L87 Difference]: Start difference. First operand 2028 states and 3114 transitions. Second operand 4 states. [2020-10-14 09:22:06,107 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:07,270 INFO L93 Difference]: Finished difference Result 5228 states and 8109 transitions. [2020-10-14 09:22:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:07,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:22:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:07,290 INFO L225 Difference]: With dead ends: 5228 [2020-10-14 09:22:07,290 INFO L226 Difference]: Without dead ends: 3646 [2020-10-14 09:22:07,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2020-10-14 09:22:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3644. [2020-10-14 09:22:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2020-10-14 09:22:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5599 transitions. [2020-10-14 09:22:07,473 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5599 transitions. Word has length 103 [2020-10-14 09:22:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:07,473 INFO L479 AbstractCegarLoop]: Abstraction has 3644 states and 5599 transitions. [2020-10-14 09:22:07,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5599 transitions. [2020-10-14 09:22:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:22:07,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:07,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:07,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:22:07,478 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:07,478 INFO L82 PathProgramCache]: Analyzing trace with hash -620408776, now seen corresponding path program 1 times [2020-10-14 09:22:07,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:07,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768861012] [2020-10-14 09:22:07,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:12,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:12,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:22:12,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:12,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:22:12,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:12,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:22:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:22:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:12,754 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:22:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:12,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:12,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768861012] [2020-10-14 09:22:12,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:12,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:12,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933907444] [2020-10-14 09:22:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:12,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:12,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:12,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:12,798 INFO L87 Difference]: Start difference. First operand 3644 states and 5599 transitions. Second operand 4 states. [2020-10-14 09:22:13,025 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:14,176 INFO L93 Difference]: Finished difference Result 9744 states and 15019 transitions. [2020-10-14 09:22:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:14,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:22:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:14,209 INFO L225 Difference]: With dead ends: 9744 [2020-10-14 09:22:14,210 INFO L226 Difference]: Without dead ends: 6710 [2020-10-14 09:22:14,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2020-10-14 09:22:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6708. [2020-10-14 09:22:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6708 states. [2020-10-14 09:22:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6708 states to 6708 states and 10225 transitions. [2020-10-14 09:22:14,541 INFO L78 Accepts]: Start accepts. Automaton has 6708 states and 10225 transitions. Word has length 103 [2020-10-14 09:22:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:14,542 INFO L479 AbstractCegarLoop]: Abstraction has 6708 states and 10225 transitions. [2020-10-14 09:22:14,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6708 states and 10225 transitions. [2020-10-14 09:22:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:22:14,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:14,549 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] [2020-10-14 09:22:14,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:22:14,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:14,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1682827706, now seen corresponding path program 1 times [2020-10-14 09:22:14,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:14,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800306905] [2020-10-14 09:22:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:22:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:22:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:19,805 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:19,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800306905] [2020-10-14 09:22:19,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:19,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:19,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572468463] [2020-10-14 09:22:19,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:19,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:19,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:19,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:19,841 INFO L87 Difference]: Start difference. First operand 6708 states and 10225 transitions. Second operand 4 states. [2020-10-14 09:22:20,062 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:21,513 INFO L93 Difference]: Finished difference Result 18368 states and 27999 transitions. [2020-10-14 09:22:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:21,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:22:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:21,613 INFO L225 Difference]: With dead ends: 18368 [2020-10-14 09:22:21,614 INFO L226 Difference]: Without dead ends: 12494 [2020-10-14 09:22:21,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12494 states. [2020-10-14 09:22:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12494 to 12492. [2020-10-14 09:22:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12492 states. [2020-10-14 09:22:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12492 states to 12492 states and 18813 transitions. [2020-10-14 09:22:22,152 INFO L78 Accepts]: Start accepts. Automaton has 12492 states and 18813 transitions. Word has length 103 [2020-10-14 09:22:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:22,153 INFO L479 AbstractCegarLoop]: Abstraction has 12492 states and 18813 transitions. [2020-10-14 09:22:22,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 12492 states and 18813 transitions. [2020-10-14 09:22:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:22:22,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:22,164 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] [2020-10-14 09:22:22,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:22:22,165 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1121534984, now seen corresponding path program 1 times [2020-10-14 09:22:22,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:22,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533757614] [2020-10-14 09:22:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 09:22:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:22:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:27,420 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:27,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:27,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:27,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:27,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533757614] [2020-10-14 09:22:27,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:27,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:27,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650828978] [2020-10-14 09:22:27,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:27,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:27,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:27,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:27,448 INFO L87 Difference]: Start difference. First operand 12492 states and 18813 transitions. Second operand 4 states. [2020-10-14 09:22:27,718 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:29,164 INFO L93 Difference]: Finished difference Result 34634 states and 52083 transitions. [2020-10-14 09:22:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:29,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:22:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:29,231 INFO L225 Difference]: With dead ends: 34634 [2020-10-14 09:22:29,231 INFO L226 Difference]: Without dead ends: 23288 [2020-10-14 09:22:29,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23288 states. [2020-10-14 09:22:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23288 to 23286. [2020-10-14 09:22:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23286 states. [2020-10-14 09:22:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23286 states to 23286 states and 34553 transitions. [2020-10-14 09:22:30,263 INFO L78 Accepts]: Start accepts. Automaton has 23286 states and 34553 transitions. Word has length 103 [2020-10-14 09:22:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:30,264 INFO L479 AbstractCegarLoop]: Abstraction has 23286 states and 34553 transitions. [2020-10-14 09:22:30,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23286 states and 34553 transitions. [2020-10-14 09:22:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:30,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:30,281 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] [2020-10-14 09:22:30,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:22:30,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:30,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1063296094, now seen corresponding path program 1 times [2020-10-14 09:22:30,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:30,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545146448] [2020-10-14 09:22:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3174 [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:22:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:22:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 09:22:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:33,707 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:33,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:33,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:33,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545146448] [2020-10-14 09:22:33,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:33,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:22:33,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956958628] [2020-10-14 09:22:33,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:22:33,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:33,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:22:33,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:33,744 INFO L87 Difference]: Start difference. First operand 23286 states and 34553 transitions. Second operand 6 states. [2020-10-14 09:22:33,958 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:22:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:42,353 INFO L93 Difference]: Finished difference Result 187920 states and 279883 transitions. [2020-10-14 09:22:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:22:42,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 09:22:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:42,836 INFO L225 Difference]: With dead ends: 187920 [2020-10-14 09:22:42,836 INFO L226 Difference]: Without dead ends: 166090 [2020-10-14 09:22:42,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:22:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166090 states. [2020-10-14 09:22:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166090 to 86360. [2020-10-14 09:22:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86360 states. [2020-10-14 09:22:48,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86360 states to 86360 states and 128177 transitions. [2020-10-14 09:22:48,309 INFO L78 Accepts]: Start accepts. Automaton has 86360 states and 128177 transitions. Word has length 104 [2020-10-14 09:22:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:48,310 INFO L479 AbstractCegarLoop]: Abstraction has 86360 states and 128177 transitions. [2020-10-14 09:22:48,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:22:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 86360 states and 128177 transitions. [2020-10-14 09:22:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:48,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:48,364 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] [2020-10-14 09:22:48,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:22:48,364 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -189099541, now seen corresponding path program 1 times [2020-10-14 09:22:48,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:48,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577401653] [2020-10-14 09:22:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:52,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:52,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-10-14 09:22:52,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:52,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:22:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:22:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:22:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:52,608 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:52,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:52,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577401653] [2020-10-14 09:22:52,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:52,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:22:52,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985699950] [2020-10-14 09:22:52,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:22:52,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:52,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:22:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:52,635 INFO L87 Difference]: Start difference. First operand 86360 states and 128177 transitions. Second operand 6 states. [2020-10-14 09:22:52,847 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:23:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:20,317 INFO L93 Difference]: Finished difference Result 720934 states and 1070647 transitions. [2020-10-14 09:23:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:23:20,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 09:23:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:22,444 INFO L225 Difference]: With dead ends: 720934 [2020-10-14 09:23:22,445 INFO L226 Difference]: Without dead ends: 638210 [2020-10-14 09:23:22,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:23:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638210 states. [2020-10-14 09:23:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638210 to 326812. [2020-10-14 09:23:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326812 states. [2020-10-14 09:23:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326812 states to 326812 states and 483893 transitions. [2020-10-14 09:23:46,556 INFO L78 Accepts]: Start accepts. Automaton has 326812 states and 483893 transitions. Word has length 104 [2020-10-14 09:23:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:46,557 INFO L479 AbstractCegarLoop]: Abstraction has 326812 states and 483893 transitions. [2020-10-14 09:23:46,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:23:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 326812 states and 483893 transitions. [2020-10-14 09:23:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:23:46,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:46,644 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] [2020-10-14 09:23:46,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:23:46,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -835923140, now seen corresponding path program 1 times [2020-10-14 09:23:46,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:46,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380955421] [2020-10-14 09:23:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:53,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:23:53,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6706 [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 09:23:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:53,609 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:23:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:53,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380955421] [2020-10-14 09:23:53,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:53,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:23:53,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461211604] [2020-10-14 09:23:53,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:23:53,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:23:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:23:53,637 INFO L87 Difference]: Start difference. First operand 326812 states and 483893 transitions. Second operand 6 states. [2020-10-14 09:23:53,853 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 176