/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:06:42,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:06:42,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:06:42,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:06:42,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:06:42,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:06:42,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:06:42,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:06:42,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:06:42,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:06:42,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:06:42,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:06:42,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:06:42,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:06:42,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:06:42,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:06:42,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:06:42,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:06:42,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:06:42,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:06:42,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:06:42,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:06:42,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:06:42,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:06:42,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:06:42,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:06:42,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:06:42,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:06:42,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:06:42,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:06:42,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:06:42,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:06:42,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:06:42,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:06:42,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:06:42,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:06:42,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:06:42,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:06:42,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:06:42,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:06:42,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:06:42,680 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 04:06:42,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:06:42,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:06:42,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:06:42,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:06:42,721 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:06:42,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:06:42,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:06:42,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:06:42,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:06:42,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:06:42,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:06:42,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:06:42,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:06:42,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:06:42,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:06:42,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:06:42,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:06:42,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:06:42,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:06:42,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:06:42,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:06:42,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:06:42,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:06:42,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:06:42,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:06:42,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:06:42,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:06:42,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:06:42,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:06:42,727 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 04:06:43,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:06:43,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:06:43,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:06:43,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:06:43,045 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:06:43,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:06:43,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e34cf1e3/294a6ec73cf04acc981eabe1e033533e/FLAG967ff8048 [2020-10-15 04:06:43,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:06:43,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:06:43,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e34cf1e3/294a6ec73cf04acc981eabe1e033533e/FLAG967ff8048 [2020-10-15 04:06:43,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e34cf1e3/294a6ec73cf04acc981eabe1e033533e [2020-10-15 04:06:43,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:06:43,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:06:43,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:06:43,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:06:43,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:06:43,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:06:43" (1/1) ... [2020-10-15 04:06:43,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:43, skipping insertion in model container [2020-10-15 04:06:43,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:06:43" (1/1) ... [2020-10-15 04:06:43,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:06:44,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:06:44,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:06:44,422 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:06:44,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:06:44,730 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:06:44,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44 WrapperNode [2020-10-15 04:06:44,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:06:44,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:06:44,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:06:44,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:06:44,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (1/1) ... [2020-10-15 04:06:44,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:06:44,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:06:44,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:06:44,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:06:44,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (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 04:06:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:06:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:06:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:06:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:06:44,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:06:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:06:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:06:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:06:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:06:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:06:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:06:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:06:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:06:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:06:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:06:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:06:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:06:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:06:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:06:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:06:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:06:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:06:46,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:06:46,423 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:06:46,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:06:46 BoogieIcfgContainer [2020-10-15 04:06:46,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:06:46,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:06:46,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:06:46,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:06:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:06:43" (1/3) ... [2020-10-15 04:06:46,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c7621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:06:46, skipping insertion in model container [2020-10-15 04:06:46,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:06:44" (2/3) ... [2020-10-15 04:06:46,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c7621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:06:46, skipping insertion in model container [2020-10-15 04:06:46,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:06:46" (3/3) ... [2020-10-15 04:06:46,439 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:06:46,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:06:46,458 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:06:46,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:06:46,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:06:46,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:06:46,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:06:46,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:06:46,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:06:46,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:06:46,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:06:46,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:06:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states. [2020-10-15 04:06:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 04:06:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:46,545 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] [2020-10-15 04:06:46,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -743554307, now seen corresponding path program 1 times [2020-10-15 04:06:46,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:46,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003034190] [2020-10-15 04:06:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 04:06:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:06:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 04:06:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:06:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 04:06:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:06:52,692 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:06:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:52,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:06:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:52,767 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 04:06:52,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003034190] [2020-10-15 04:06:52,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:06:52,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755767540] [2020-10-15 04:06:52,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:06:52,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:52,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:06:52,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:06:52,795 INFO L87 Difference]: Start difference. First operand 343 states. Second operand 4 states. [2020-10-15 04:06:53,363 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:06:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:55,636 INFO L93 Difference]: Finished difference Result 649 states and 1111 transitions. [2020-10-15 04:06:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:55,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-15 04:06:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:55,658 INFO L225 Difference]: With dead ends: 649 [2020-10-15 04:06:55,658 INFO L226 Difference]: Without dead ends: 483 [2020-10-15 04:06:55,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-15 04:06:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 480. [2020-10-15 04:06:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-15 04:06:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 801 transitions. [2020-10-15 04:06:55,789 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 801 transitions. Word has length 110 [2020-10-15 04:06:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:55,790 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 801 transitions. [2020-10-15 04:06:55,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:06:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 801 transitions. [2020-10-15 04:06:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:06:55,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:55,805 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] [2020-10-15 04:06:55,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:06:55,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2077707881, now seen corresponding path program 1 times [2020-10-15 04:06:55,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:55,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576344756] [2020-10-15 04:06:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:00,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 04:07:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:07:00,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:00,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:00,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:00,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:07:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:01,385 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:01,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:01,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:01,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:07:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:01,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:01,478 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 04:07:01,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576344756] [2020-10-15 04:07:01,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:01,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:01,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664994096] [2020-10-15 04:07:01,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:01,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:01,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:01,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:01,484 INFO L87 Difference]: Start difference. First operand 480 states and 801 transitions. Second operand 5 states. [2020-10-15 04:07:03,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:03,730 INFO L93 Difference]: Finished difference Result 1346 states and 2240 transitions. [2020-10-15 04:07:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:03,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-15 04:07:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:03,738 INFO L225 Difference]: With dead ends: 1346 [2020-10-15 04:07:03,738 INFO L226 Difference]: Without dead ends: 913 [2020-10-15 04:07:03,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-15 04:07:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 911. [2020-10-15 04:07:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-15 04:07:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1510 transitions. [2020-10-15 04:07:03,805 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1510 transitions. Word has length 113 [2020-10-15 04:07:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:03,806 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1510 transitions. [2020-10-15 04:07:03,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1510 transitions. [2020-10-15 04:07:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 04:07:03,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:03,809 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] [2020-10-15 04:07:03,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:07:03,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash 191001740, now seen corresponding path program 1 times [2020-10-15 04:07:03,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:03,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-10-15 04:07:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:08,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 04:07:08,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:07:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:08,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:07:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:09,340 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:09,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:09,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:07:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:09,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:09,410 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 04:07:09,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-10-15 04:07:09,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:09,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:09,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728095523] [2020-10-15 04:07:09,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:09,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:09,413 INFO L87 Difference]: Start difference. First operand 911 states and 1510 transitions. Second operand 5 states. [2020-10-15 04:07:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:11,889 INFO L93 Difference]: Finished difference Result 2641 states and 4373 transitions. [2020-10-15 04:07:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:11,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-15 04:07:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:11,900 INFO L225 Difference]: With dead ends: 2641 [2020-10-15 04:07:11,901 INFO L226 Difference]: Without dead ends: 1771 [2020-10-15 04:07:11,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-10-15 04:07:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1769. [2020-10-15 04:07:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1769 states. [2020-10-15 04:07:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2914 transitions. [2020-10-15 04:07:11,994 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2914 transitions. Word has length 114 [2020-10-15 04:07:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:11,996 INFO L479 AbstractCegarLoop]: Abstraction has 1769 states and 2914 transitions. [2020-10-15 04:07:11,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2914 transitions. [2020-10-15 04:07:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 04:07:12,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:12,004 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] [2020-10-15 04:07:12,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:07:12,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1506370217, now seen corresponding path program 1 times [2020-10-15 04:07:12,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:12,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890476626] [2020-10-15 04:07:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:17,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:07:17,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:07:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:17,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:07:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:17,756 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:17,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:17,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:17,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 04:07:17,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:17,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:17,911 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 04:07:17,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890476626] [2020-10-15 04:07:17,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:17,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:17,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450753610] [2020-10-15 04:07:17,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:17,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:17,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:17,916 INFO L87 Difference]: Start difference. First operand 1769 states and 2914 transitions. Second operand 5 states. [2020-10-15 04:07:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:20,890 INFO L93 Difference]: Finished difference Result 5107 states and 8395 transitions. [2020-10-15 04:07:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:20,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-15 04:07:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:20,909 INFO L225 Difference]: With dead ends: 5107 [2020-10-15 04:07:20,910 INFO L226 Difference]: Without dead ends: 3475 [2020-10-15 04:07:20,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-15 04:07:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3473. [2020-10-15 04:07:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3473 states. [2020-10-15 04:07:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 5695 transitions. [2020-10-15 04:07:21,129 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 5695 transitions. Word has length 115 [2020-10-15 04:07:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:21,130 INFO L479 AbstractCegarLoop]: Abstraction has 3473 states and 5695 transitions. [2020-10-15 04:07:21,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 5695 transitions. [2020-10-15 04:07:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 04:07:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:21,137 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] [2020-10-15 04:07:21,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:07:21,138 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 456517044, now seen corresponding path program 1 times [2020-10-15 04:07:21,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985355074] [2020-10-15 04:07:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:21,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:07:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:26,654 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:26,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:26,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:26,726 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 04:07:26,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985355074] [2020-10-15 04:07:26,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:26,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:26,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463937443] [2020-10-15 04:07:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:26,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:26,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:26,729 INFO L87 Difference]: Start difference. First operand 3473 states and 5695 transitions. Second operand 5 states. [2020-10-15 04:07:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:28,944 INFO L93 Difference]: Finished difference Result 10069 states and 16473 transitions. [2020-10-15 04:07:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:28,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-15 04:07:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:28,974 INFO L225 Difference]: With dead ends: 10069 [2020-10-15 04:07:28,974 INFO L226 Difference]: Without dead ends: 6763 [2020-10-15 04:07:28,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-10-15 04:07:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6761. [2020-10-15 04:07:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6761 states. [2020-10-15 04:07:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 11003 transitions. [2020-10-15 04:07:29,480 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 11003 transitions. Word has length 116 [2020-10-15 04:07:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:29,480 INFO L479 AbstractCegarLoop]: Abstraction has 6761 states and 11003 transitions. [2020-10-15 04:07:29,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 11003 transitions. [2020-10-15 04:07:29,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 04:07:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:29,493 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] [2020-10-15 04:07:29,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:07:29,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1546527481, now seen corresponding path program 1 times [2020-10-15 04:07:29,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:29,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924169950] [2020-10-15 04:07:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 04:07:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3616 [2020-10-15 04:07:33,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:33,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:07:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:07:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:07:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:33,556 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:07:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:33,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:33,611 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 04:07:33,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924169950] [2020-10-15 04:07:33,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:33,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:07:33,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331356512] [2020-10-15 04:07:33,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:07:33,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:33,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:07:33,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:07:33,614 INFO L87 Difference]: Start difference. First operand 6761 states and 11003 transitions. Second operand 4 states. [2020-10-15 04:07:34,034 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:07:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:36,185 INFO L93 Difference]: Finished difference Result 15085 states and 24829 transitions. [2020-10-15 04:07:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:36,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-15 04:07:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:36,228 INFO L225 Difference]: With dead ends: 15085 [2020-10-15 04:07:36,228 INFO L226 Difference]: Without dead ends: 10771 [2020-10-15 04:07:36,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2020-10-15 04:07:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 10737. [2020-10-15 04:07:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10737 states. [2020-10-15 04:07:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10737 states to 10737 states and 17555 transitions. [2020-10-15 04:07:36,821 INFO L78 Accepts]: Start accepts. Automaton has 10737 states and 17555 transitions. Word has length 116 [2020-10-15 04:07:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:36,821 INFO L479 AbstractCegarLoop]: Abstraction has 10737 states and 17555 transitions. [2020-10-15 04:07:36,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:07:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 10737 states and 17555 transitions. [2020-10-15 04:07:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 04:07:36,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:36,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:36,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:07:36,835 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2067930730, now seen corresponding path program 1 times [2020-10-15 04:07:36,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:36,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220833673] [2020-10-15 04:07:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:41,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:07:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:07:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:07:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 04:07:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:42,291 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:42,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:42,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:07:42,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:42,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:42,359 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 04:07:42,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220833673] [2020-10-15 04:07:42,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:42,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:42,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848918330] [2020-10-15 04:07:42,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:42,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:42,361 INFO L87 Difference]: Start difference. First operand 10737 states and 17555 transitions. Second operand 5 states. [2020-10-15 04:07:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:45,209 INFO L93 Difference]: Finished difference Result 31195 states and 50916 transitions. [2020-10-15 04:07:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:45,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 04:07:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:45,256 INFO L225 Difference]: With dead ends: 31195 [2020-10-15 04:07:45,256 INFO L226 Difference]: Without dead ends: 20837 [2020-10-15 04:07:45,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20837 states. [2020-10-15 04:07:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20837 to 20835. [2020-10-15 04:07:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20835 states. [2020-10-15 04:07:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20835 states to 20835 states and 33820 transitions. [2020-10-15 04:07:46,197 INFO L78 Accepts]: Start accepts. Automaton has 20835 states and 33820 transitions. Word has length 120 [2020-10-15 04:07:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:46,198 INFO L479 AbstractCegarLoop]: Abstraction has 20835 states and 33820 transitions. [2020-10-15 04:07:46,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 20835 states and 33820 transitions. [2020-10-15 04:07:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 04:07:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:46,217 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] [2020-10-15 04:07:46,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:07:46,217 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1489537533, now seen corresponding path program 1 times [2020-10-15 04:07:46,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:46,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532917484] [2020-10-15 04:07:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:51,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:51,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 04:07:51,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 04:07:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:51,815 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:07:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:51,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:07:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:51,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:51,872 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 04:07:51,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532917484] [2020-10-15 04:07:51,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:51,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:51,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967740433] [2020-10-15 04:07:51,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:51,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:51,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:51,874 INFO L87 Difference]: Start difference. First operand 20835 states and 33820 transitions. Second operand 5 states. [2020-10-15 04:07:55,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:55,469 INFO L93 Difference]: Finished difference Result 60739 states and 98466 transitions. [2020-10-15 04:07:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:55,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-15 04:07:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:55,537 INFO L225 Difference]: With dead ends: 60739 [2020-10-15 04:07:55,538 INFO L226 Difference]: Without dead ends: 40461 [2020-10-15 04:07:55,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40461 states. [2020-10-15 04:07:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40461 to 40459. [2020-10-15 04:07:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40459 states. [2020-10-15 04:07:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40459 states to 40459 states and 65228 transitions. [2020-10-15 04:07:58,707 INFO L78 Accepts]: Start accepts. Automaton has 40459 states and 65228 transitions. Word has length 121 [2020-10-15 04:07:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:58,708 INFO L479 AbstractCegarLoop]: Abstraction has 40459 states and 65228 transitions. [2020-10-15 04:07:58,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 40459 states and 65228 transitions. [2020-10-15 04:07:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:07:58,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:58,736 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] [2020-10-15 04:07:58,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:07:58,737 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash 984225813, now seen corresponding path program 1 times [2020-10-15 04:07:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:58,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302174436] [2020-10-15 04:07:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:03,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:08:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:08:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4327 [2020-10-15 04:08:03,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:08:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:08:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 04:08:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:03,551 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:08:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:03,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:03,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:03,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:08:03,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:03,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:08:03,609 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 04:08:03,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302174436] [2020-10-15 04:08:03,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:03,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:08:03,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310166874] [2020-10-15 04:08:03,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:08:03,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:08:03,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:08:03,612 INFO L87 Difference]: Start difference. First operand 40459 states and 65228 transitions. Second operand 7 states. [2020-10-15 04:08:04,046 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-15 04:08:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:15,302 INFO L93 Difference]: Finished difference Result 247995 states and 405940 transitions. [2020-10-15 04:08:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:08:15,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-15 04:08:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:15,778 INFO L225 Difference]: With dead ends: 247995 [2020-10-15 04:08:15,778 INFO L226 Difference]: Without dead ends: 216377 [2020-10-15 04:08:15,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:08:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216377 states. [2020-10-15 04:08:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216377 to 72075. [2020-10-15 04:08:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72075 states. [2020-10-15 04:08:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72075 states to 72075 states and 116556 transitions. [2020-10-15 04:08:23,624 INFO L78 Accepts]: Start accepts. Automaton has 72075 states and 116556 transitions. Word has length 122 [2020-10-15 04:08:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:23,624 INFO L479 AbstractCegarLoop]: Abstraction has 72075 states and 116556 transitions. [2020-10-15 04:08:23,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:08:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 72075 states and 116556 transitions. [2020-10-15 04:08:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 04:08:23,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:23,658 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] [2020-10-15 04:08:23,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:08:23,658 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash 380060837, now seen corresponding path program 1 times [2020-10-15 04:08:23,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:23,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015074914] [2020-10-15 04:08:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:23,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-15 04:08:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:08:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:08:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:28,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:08:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:08:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:29,131 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:08:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:29,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:29,167 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 04:08:29,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015074914] [2020-10-15 04:08:29,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:29,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:29,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167140] [2020-10-15 04:08:29,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:29,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:29,169 INFO L87 Difference]: Start difference. First operand 72075 states and 116556 transitions. Second operand 5 states. [2020-10-15 04:08:29,576 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:08:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:42,381 INFO L93 Difference]: Finished difference Result 261777 states and 426063 transitions. [2020-10-15 04:08:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:08:42,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-15 04:08:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:44,674 INFO L225 Difference]: With dead ends: 261777 [2020-10-15 04:08:44,675 INFO L226 Difference]: Without dead ends: 198543 [2020-10-15 04:08:44,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:08:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198543 states. [2020-10-15 04:08:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198543 to 134795. [2020-10-15 04:08:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134795 states. [2020-10-15 04:08:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134795 states to 134795 states and 218188 transitions. [2020-10-15 04:08:52,949 INFO L78 Accepts]: Start accepts. Automaton has 134795 states and 218188 transitions. Word has length 123 [2020-10-15 04:08:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:52,949 INFO L479 AbstractCegarLoop]: Abstraction has 134795 states and 218188 transitions. [2020-10-15 04:08:52,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 134795 states and 218188 transitions. [2020-10-15 04:08:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:08:52,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:52,981 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] [2020-10-15 04:08:52,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:08:52,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:52,982 INFO L82 PathProgramCache]: Analyzing trace with hash 351291949, now seen corresponding path program 1 times [2020-10-15 04:08:52,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:52,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617052548] [2020-10-15 04:08:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:58,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:58,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 04:08:58,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:08:58,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:58,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 04:08:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:58,458 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:08:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:58,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:58,506 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 04:08:58,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617052548] [2020-10-15 04:08:58,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:58,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:58,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491177939] [2020-10-15 04:08:58,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:58,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:58,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:58,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:58,508 INFO L87 Difference]: Start difference. First operand 134795 states and 218188 transitions. Second operand 5 states. [2020-10-15 04:09:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:18,510 INFO L93 Difference]: Finished difference Result 398033 states and 644106 transitions. [2020-10-15 04:09:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:18,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-15 04:09:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:18,930 INFO L225 Difference]: With dead ends: 398033 [2020-10-15 04:09:18,930 INFO L226 Difference]: Without dead ends: 263519 [2020-10-15 04:09:19,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263519 states. [2020-10-15 04:09:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263519 to 263517. [2020-10-15 04:09:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263517 states. [2020-10-15 04:09:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263517 states to 263517 states and 424700 transitions. [2020-10-15 04:09:44,273 INFO L78 Accepts]: Start accepts. Automaton has 263517 states and 424700 transitions. Word has length 124 [2020-10-15 04:09:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:44,273 INFO L479 AbstractCegarLoop]: Abstraction has 263517 states and 424700 transitions. [2020-10-15 04:09:44,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 263517 states and 424700 transitions. [2020-10-15 04:09:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:09:44,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:44,359 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] [2020-10-15 04:09:44,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:09:44,360 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 146928378, now seen corresponding path program 1 times [2020-10-15 04:09:44,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:44,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58980395] [2020-10-15 04:09:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:49,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:49,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 04:09:49,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:09:49,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:09:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:49,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 04:09:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:50,056 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:50,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58980395] [2020-10-15 04:09:50,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:50,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:50,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637334894] [2020-10-15 04:09:50,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:50,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:50,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:50,104 INFO L87 Difference]: Start difference. First operand 263517 states and 424700 transitions. Second operand 5 states.