/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:37,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:37,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:37,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:37,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:37,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:37,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:37,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:37,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:37,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:37,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:37,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:37,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:37,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:37,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:37,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:37,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:37,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:37,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:37,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:37,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:37,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:37,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:37,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:37,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:37,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:37,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:37,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:37,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:37,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:37,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:37,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:37,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:37,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:37,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:37,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:37,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:37,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:37,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:37,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:37,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:37,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:16:37,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:37,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:37,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:37,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:37,683 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:37,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:37,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:37,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:37,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:37,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:37,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:37,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:37,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:37,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:37,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:37,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:37,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:37,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:37,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:37,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:37,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:37,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:37,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:37,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:37,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:37,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:37,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:37,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:37,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:37,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:16:37,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:38,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:38,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:38,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:38,012 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:38,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:38,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c3a44b8/c864f4c6205b4ebe880a7349685b4850/FLAGacfabe447 [2020-10-15 04:16:38,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:16:38,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:38,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c3a44b8/c864f4c6205b4ebe880a7349685b4850/FLAGacfabe447 [2020-10-15 04:16:38,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c3a44b8/c864f4c6205b4ebe880a7349685b4850 [2020-10-15 04:16:38,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:16:38,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:16:38,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:38,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:16:38,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:16:38,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:38" (1/1) ... [2020-10-15 04:16:38,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130f42b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:38, skipping insertion in model container [2020-10-15 04:16:38,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:38" (1/1) ... [2020-10-15 04:16:38,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:16:38,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:16:39,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:39,655 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:16:40,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:40,392 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:16:40,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40 WrapperNode [2020-10-15 04:16:40,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:40,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:16:40,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:16:40,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:16:40,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... [2020-10-15 04:16:40,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:16:40,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:16:40,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:16:40,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:16:40,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:40,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:16:40,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:16:40,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:16:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:16:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:16:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:16:43,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:16:43,137 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:16:43,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:43 BoogieIcfgContainer [2020-10-15 04:16:43,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:16:43,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:16:43,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:16:43,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:16:43,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:16:38" (1/3) ... [2020-10-15 04:16:43,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7659255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:43, skipping insertion in model container [2020-10-15 04:16:43,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:40" (2/3) ... [2020-10-15 04:16:43,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7659255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:43, skipping insertion in model container [2020-10-15 04:16:43,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:43" (3/3) ... [2020-10-15 04:16:43,156 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:43,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:16:43,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:16:43,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:16:43,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:16:43,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:16:43,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:16:43,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:16:43,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:16:43,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:16:43,220 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:16:43,220 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:16:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-15 04:16:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-15 04:16:43,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:43,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:43,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:43,293 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-15 04:16:43,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:43,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095890973] [2020-10-15 04:16:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-15 04:16:49,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:16:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-15 04:16:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-15 04:16:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 04:16:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:16:50,629 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:16:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 04:16:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:50,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:50,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095890973] [2020-10-15 04:16:50,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:50,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:50,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801817075] [2020-10-15 04:16:50,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:50,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:50,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:50,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:50,856 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2020-10-15 04:16:51,852 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:16:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:57,664 INFO L93 Difference]: Finished difference Result 1209 states and 2150 transitions. [2020-10-15 04:16:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:57,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-15 04:16:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:57,713 INFO L225 Difference]: With dead ends: 1209 [2020-10-15 04:16:57,713 INFO L226 Difference]: Without dead ends: 978 [2020-10-15 04:16:57,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-15 04:16:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2020-10-15 04:16:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-15 04:16:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1694 transitions. [2020-10-15 04:16:57,883 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1694 transitions. Word has length 217 [2020-10-15 04:16:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:57,888 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1694 transitions. [2020-10-15 04:16:57,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:16:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1694 transitions. [2020-10-15 04:16:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 04:16:57,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:57,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:57,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:16:57,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -103429761, now seen corresponding path program 1 times [2020-10-15 04:16:57,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:57,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053528073] [2020-10-15 04:16:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:03,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:17:03,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:17:03,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-15 04:17:03,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:03,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 04:17:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:04,700 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:04,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:17:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:04,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053528073] [2020-10-15 04:17:04,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:04,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:04,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573222758] [2020-10-15 04:17:04,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:04,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:04,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:04,926 INFO L87 Difference]: Start difference. First operand 976 states and 1694 transitions. Second operand 5 states. [2020-10-15 04:17:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:12,156 INFO L93 Difference]: Finished difference Result 2785 states and 4824 transitions. [2020-10-15 04:17:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:12,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-15 04:17:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:12,170 INFO L225 Difference]: With dead ends: 2785 [2020-10-15 04:17:12,170 INFO L226 Difference]: Without dead ends: 1886 [2020-10-15 04:17:12,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-15 04:17:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1884. [2020-10-15 04:17:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-15 04:17:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 3253 transitions. [2020-10-15 04:17:12,260 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 3253 transitions. Word has length 221 [2020-10-15 04:17:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:12,261 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 3253 transitions. [2020-10-15 04:17:12,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 3253 transitions. [2020-10-15 04:17:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:17:12,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:12,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:12,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:17:12,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:12,273 INFO L82 PathProgramCache]: Analyzing trace with hash -424564400, now seen corresponding path program 1 times [2020-10-15 04:17:12,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:12,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852603520] [2020-10-15 04:17:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:17,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:17,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:17:17,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:17:17,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:17:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:17,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-15 04:17:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:18,776 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:18,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:18,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:18,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:17:18,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:18,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:19,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852603520] [2020-10-15 04:17:19,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:19,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:19,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840398424] [2020-10-15 04:17:19,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:19,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:19,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:19,031 INFO L87 Difference]: Start difference. First operand 1884 states and 3253 transitions. Second operand 5 states. [2020-10-15 04:17:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:25,937 INFO L93 Difference]: Finished difference Result 5474 states and 9439 transitions. [2020-10-15 04:17:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:25,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-15 04:17:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:25,966 INFO L225 Difference]: With dead ends: 5474 [2020-10-15 04:17:25,966 INFO L226 Difference]: Without dead ends: 3715 [2020-10-15 04:17:25,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2020-10-15 04:17:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3713. [2020-10-15 04:17:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3713 states. [2020-10-15 04:17:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6383 transitions. [2020-10-15 04:17:26,170 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6383 transitions. Word has length 222 [2020-10-15 04:17:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:26,171 INFO L479 AbstractCegarLoop]: Abstraction has 3713 states and 6383 transitions. [2020-10-15 04:17:26,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6383 transitions. [2020-10-15 04:17:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:17:26,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:26,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:26,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:17:26,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash -127185935, now seen corresponding path program 1 times [2020-10-15 04:17:26,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:26,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719282831] [2020-10-15 04:17:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:17:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-15 04:17:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:31,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 04:17:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:32,556 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:17:32,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:32,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:32,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719282831] [2020-10-15 04:17:32,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:32,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:32,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735304167] [2020-10-15 04:17:32,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:32,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:32,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:32,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:32,693 INFO L87 Difference]: Start difference. First operand 3713 states and 6383 transitions. Second operand 5 states. [2020-10-15 04:17:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:38,849 INFO L93 Difference]: Finished difference Result 10847 states and 18619 transitions. [2020-10-15 04:17:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:38,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-15 04:17:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:38,886 INFO L225 Difference]: With dead ends: 10847 [2020-10-15 04:17:38,887 INFO L226 Difference]: Without dead ends: 7227 [2020-10-15 04:17:38,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2020-10-15 04:17:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7225. [2020-10-15 04:17:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7225 states. [2020-10-15 04:17:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7225 states to 7225 states and 12347 transitions. [2020-10-15 04:17:39,238 INFO L78 Accepts]: Start accepts. Automaton has 7225 states and 12347 transitions. Word has length 222 [2020-10-15 04:17:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:39,239 INFO L479 AbstractCegarLoop]: Abstraction has 7225 states and 12347 transitions. [2020-10-15 04:17:39,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7225 states and 12347 transitions. [2020-10-15 04:17:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-15 04:17:39,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:39,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:39,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:17:39,258 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:39,258 INFO L82 PathProgramCache]: Analyzing trace with hash 555255984, now seen corresponding path program 1 times [2020-10-15 04:17:39,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:39,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352678232] [2020-10-15 04:17:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:44,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:17:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-15 04:17:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:45,443 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:45,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:45,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:45,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:17:45,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:45,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:45,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352678232] [2020-10-15 04:17:45,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:45,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:45,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244666918] [2020-10-15 04:17:45,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:45,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:45,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:45,568 INFO L87 Difference]: Start difference. First operand 7225 states and 12347 transitions. Second operand 5 states. [2020-10-15 04:17:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:52,594 INFO L93 Difference]: Finished difference Result 21199 states and 36191 transitions. [2020-10-15 04:17:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:52,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-15 04:17:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:52,661 INFO L225 Difference]: With dead ends: 21199 [2020-10-15 04:17:52,661 INFO L226 Difference]: Without dead ends: 14253 [2020-10-15 04:17:52,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2020-10-15 04:17:53,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 14251. [2020-10-15 04:17:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14251 states. [2020-10-15 04:17:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14251 states to 14251 states and 24233 transitions. [2020-10-15 04:17:53,312 INFO L78 Accepts]: Start accepts. Automaton has 14251 states and 24233 transitions. Word has length 223 [2020-10-15 04:17:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:53,313 INFO L479 AbstractCegarLoop]: Abstraction has 14251 states and 24233 transitions. [2020-10-15 04:17:53,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14251 states and 24233 transitions. [2020-10-15 04:17:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-15 04:17:53,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:53,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:53,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:17:53,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:53,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1564433533, now seen corresponding path program 1 times [2020-10-15 04:17:53,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:53,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061747395] [2020-10-15 04:17:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-15 04:17:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:59,644 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:59,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:59,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061747395] [2020-10-15 04:17:59,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:59,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:59,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055647323] [2020-10-15 04:17:59,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:59,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:59,767 INFO L87 Difference]: Start difference. First operand 14251 states and 24233 transitions. Second operand 5 states. [2020-10-15 04:18:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:06,778 INFO L93 Difference]: Finished difference Result 42058 states and 71489 transitions. [2020-10-15 04:18:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:06,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-15 04:18:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:06,851 INFO L225 Difference]: With dead ends: 42058 [2020-10-15 04:18:06,851 INFO L226 Difference]: Without dead ends: 27836 [2020-10-15 04:18:06,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27836 states. [2020-10-15 04:18:07,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27836 to 27834. [2020-10-15 04:18:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27834 states. [2020-10-15 04:18:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27834 states to 27834 states and 47117 transitions. [2020-10-15 04:18:07,948 INFO L78 Accepts]: Start accepts. Automaton has 27834 states and 47117 transitions. Word has length 223 [2020-10-15 04:18:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:07,949 INFO L479 AbstractCegarLoop]: Abstraction has 27834 states and 47117 transitions. [2020-10-15 04:18:07,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 27834 states and 47117 transitions. [2020-10-15 04:18:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:18:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:07,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:07,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:18:07,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1820860382, now seen corresponding path program 1 times [2020-10-15 04:18:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:07,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412628674] [2020-10-15 04:18:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:13,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:13,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:18:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:18:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 04:18:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:13,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-15 04:18:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:14,273 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:14,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:14,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:14,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:18:14,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:14,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:14,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412628674] [2020-10-15 04:18:14,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:14,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:14,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482160017] [2020-10-15 04:18:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:14,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:14,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:14,470 INFO L87 Difference]: Start difference. First operand 27834 states and 47117 transitions. Second operand 5 states. [2020-10-15 04:18:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:24,306 INFO L93 Difference]: Finished difference Result 80854 states and 136625 transitions. [2020-10-15 04:18:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:24,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:18:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:24,477 INFO L225 Difference]: With dead ends: 80854 [2020-10-15 04:18:24,478 INFO L226 Difference]: Without dead ends: 54820 [2020-10-15 04:18:24,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54820 states. [2020-10-15 04:18:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54820 to 54818. [2020-10-15 04:18:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54818 states. [2020-10-15 04:18:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54818 states to 54818 states and 92383 transitions. [2020-10-15 04:18:27,225 INFO L78 Accepts]: Start accepts. Automaton has 54818 states and 92383 transitions. Word has length 224 [2020-10-15 04:18:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:27,225 INFO L479 AbstractCegarLoop]: Abstraction has 54818 states and 92383 transitions. [2020-10-15 04:18:27,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 54818 states and 92383 transitions. [2020-10-15 04:18:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:18:27,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:27,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:27,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:18:27,285 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:27,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1464012095, now seen corresponding path program 1 times [2020-10-15 04:18:27,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:27,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269789275] [2020-10-15 04:18:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:32,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:18:32,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:18:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-15 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:33,925 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:33,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:33,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:33,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:34,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269789275] [2020-10-15 04:18:34,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:34,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:34,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574292945] [2020-10-15 04:18:34,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:34,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:34,046 INFO L87 Difference]: Start difference. First operand 54818 states and 92383 transitions. Second operand 5 states. [2020-10-15 04:18:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:45,810 INFO L93 Difference]: Finished difference Result 160547 states and 270391 transitions. [2020-10-15 04:18:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:45,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:18:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:45,986 INFO L225 Difference]: With dead ends: 160547 [2020-10-15 04:18:45,986 INFO L226 Difference]: Without dead ends: 106903 [2020-10-15 04:18:46,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106903 states. [2020-10-15 04:18:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106903 to 106901. [2020-10-15 04:18:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106901 states. [2020-10-15 04:18:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106901 states to 106901 states and 179244 transitions. [2020-10-15 04:18:50,928 INFO L78 Accepts]: Start accepts. Automaton has 106901 states and 179244 transitions. Word has length 224 [2020-10-15 04:18:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:50,928 INFO L479 AbstractCegarLoop]: Abstraction has 106901 states and 179244 transitions. [2020-10-15 04:18:50,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 106901 states and 179244 transitions. [2020-10-15 04:18:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-15 04:18:51,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:51,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:51,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:18:51,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2058222723, now seen corresponding path program 1 times [2020-10-15 04:18:51,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:51,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685636370] [2020-10-15 04:18:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:56,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-15 04:18:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:18:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:57,642 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:57,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:57,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:57,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:18:57,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:57,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685636370] [2020-10-15 04:18:57,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:57,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:57,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290956798] [2020-10-15 04:18:57,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:57,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:57,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:57,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:57,712 INFO L87 Difference]: Start difference. First operand 106901 states and 179244 transitions. Second operand 4 states. [2020-10-15 04:18:58,755 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:19:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:12,569 INFO L93 Difference]: Finished difference Result 201113 states and 337198 transitions. [2020-10-15 04:19:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:12,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-15 04:19:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:12,868 INFO L225 Difference]: With dead ends: 201113 [2020-10-15 04:19:12,869 INFO L226 Difference]: Without dead ends: 152279 [2020-10-15 04:19:12,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152279 states. [2020-10-15 04:19:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152279 to 152277. [2020-10-15 04:19:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152277 states. [2020-10-15 04:19:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152277 states to 152277 states and 253804 transitions. [2020-10-15 04:19:23,515 INFO L78 Accepts]: Start accepts. Automaton has 152277 states and 253804 transitions. Word has length 225 [2020-10-15 04:19:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:23,515 INFO L479 AbstractCegarLoop]: Abstraction has 152277 states and 253804 transitions. [2020-10-15 04:19:23,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:19:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 152277 states and 253804 transitions. [2020-10-15 04:19:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:19:23,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:23,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:19:23,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:19:23,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash 310806978, now seen corresponding path program 1 times [2020-10-15 04:19:23,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:23,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69621528] [2020-10-15 04:19:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 04:19:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:19:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6909 [2020-10-15 04:19:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:30,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:19:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:19:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-15 04:19:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:31,738 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:19:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:31,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:31,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:19:31,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:31,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:19:31,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69621528] [2020-10-15 04:19:31,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:31,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:19:31,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266655206] [2020-10-15 04:19:31,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:19:31,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:31,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:19:31,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:31,885 INFO L87 Difference]: Start difference. First operand 152277 states and 253804 transitions. Second operand 5 states. [2020-10-15 04:19:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:53,802 INFO L93 Difference]: Finished difference Result 453096 states and 755164 transitions. [2020-10-15 04:19:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:53,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:19:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:54,199 INFO L225 Difference]: With dead ends: 453096 [2020-10-15 04:19:54,199 INFO L226 Difference]: Without dead ends: 301125 [2020-10-15 04:19:54,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301125 states.