/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:08:21,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:08:21,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:08:21,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:08:21,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:08:21,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:08:21,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:08:21,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:08:21,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:08:21,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:08:21,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:08:21,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:08:21,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:08:21,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:08:21,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:08:21,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:08:21,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:08:21,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:08:21,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:08:21,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:08:21,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:08:21,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:08:21,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:08:21,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:08:21,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:08:21,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:08:21,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:08:21,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:08:21,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:08:21,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:08:21,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:08:21,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:08:21,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:08:21,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:08:21,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:08:21,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:08:21,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:08:21,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:08:21,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:08:21,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:08:21,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:08:21,752 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 [2020-10-27 06:08:21,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:08:21,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:08:21,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:08:21,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:08:21,815 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:08:21,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:08:21,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:08:21,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:08:21,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:08:21,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:08:21,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:08:21,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:08:21,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:08:21,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:08:21,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:08:21,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:08:21,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:08:21,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:08:21,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:08:21,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:08:21,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:08:21,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:08:21,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:08:21,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:08:21,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:08:21,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:08:21,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:08:21,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:08:21,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:08:21,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:08:22,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:08:22,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:08:22,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:08:22,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:08:22,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:08:22,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:22,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d95f588b/fbd09eb38fcb45ac8c64049081b3e165/FLAG8378d8781 [2020-10-27 06:08:23,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:08:23,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:23,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d95f588b/fbd09eb38fcb45ac8c64049081b3e165/FLAG8378d8781 [2020-10-27 06:08:23,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d95f588b/fbd09eb38fcb45ac8c64049081b3e165 [2020-10-27 06:08:23,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:08:23,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:08:23,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:23,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:08:23,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:08:23,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:23" (1/1) ... [2020-10-27 06:08:23,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4040367a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:23, skipping insertion in model container [2020-10-27 06:08:23,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:23" (1/1) ... [2020-10-27 06:08:23,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:08:23,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:08:24,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:24,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:08:24,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:24,569 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:08:24,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24 WrapperNode [2020-10-27 06:08:24,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:24,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:08:24,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:08:24,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:08:24,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (1/1) ... [2020-10-27 06:08:24,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:08:24,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:08:24,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:08:24,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:08:24,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (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 [2020-10-27 06:08:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:08:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:08:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:08:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:08:24,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:08:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:08:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:08:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:08:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:08:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:08:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:08:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:08:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:08:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:08:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:08:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:08:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:08:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:08:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:08:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:08:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:08:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:08:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:08:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:08:27,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:08:27,767 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:08:27,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:27 BoogieIcfgContainer [2020-10-27 06:08:27,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:08:27,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:08:27,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:08:27,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:08:27,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:08:23" (1/3) ... [2020-10-27 06:08:27,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc75baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:27, skipping insertion in model container [2020-10-27 06:08:27,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:24" (2/3) ... [2020-10-27 06:08:27,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc75baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:27, skipping insertion in model container [2020-10-27 06:08:27,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:27" (3/3) ... [2020-10-27 06:08:27,788 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:27,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:08:27,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:08:27,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:08:27,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:08:27,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:08:27,881 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:08:27,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:08:27,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:08:27,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:08:27,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:08:27,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:08:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states. [2020-10-27 06:08:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 06:08:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:27,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:27,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash -374516070, now seen corresponding path program 1 times [2020-10-27 06:08:27,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:27,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742868366] [2020-10-27 06:08:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:33,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 06:08:33,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:08:33,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 06:08:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:08:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 06:08:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 06:08:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:08:35,209 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:08:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:35,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:08:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:35,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742868366] [2020-10-27 06:08:35,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:35,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:08:35,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385583030] [2020-10-27 06:08:35,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:08:35,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:08:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:08:35,432 INFO L87 Difference]: Start difference. First operand 759 states. Second operand 4 states. [2020-10-27 06:08:36,769 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 06:08:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:43,233 INFO L93 Difference]: Finished difference Result 1193 states and 2114 transitions. [2020-10-27 06:08:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:08:43,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-10-27 06:08:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:43,291 INFO L225 Difference]: With dead ends: 1193 [2020-10-27 06:08:43,291 INFO L226 Difference]: Without dead ends: 958 [2020-10-27 06:08:43,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-27 06:08:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 955. [2020-10-27 06:08:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-27 06:08:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1667 transitions. [2020-10-27 06:08:43,446 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1667 transitions. Word has length 198 [2020-10-27 06:08:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:43,447 INFO L481 AbstractCegarLoop]: Abstraction has 955 states and 1667 transitions. [2020-10-27 06:08:43,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:08:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1667 transitions. [2020-10-27 06:08:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 06:08:43,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:43,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:43,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:08:43,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:43,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1660384523, now seen corresponding path program 1 times [2020-10-27 06:08:43,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:43,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344466700] [2020-10-27 06:08:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:48,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 06:08:48,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:08:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-27 06:08:48,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 06:08:48,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 06:08:50,043 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:08:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:50,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 06:08:50,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:50,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344466700] [2020-10-27 06:08:50,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:50,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:50,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952576517] [2020-10-27 06:08:50,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:50,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:50,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:50,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:50,328 INFO L87 Difference]: Start difference. First operand 955 states and 1667 transitions. Second operand 5 states. [2020-10-27 06:08:58,463 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:08:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:58,652 INFO L93 Difference]: Finished difference Result 2821 states and 4930 transitions. [2020-10-27 06:08:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:58,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-27 06:08:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:58,665 INFO L225 Difference]: With dead ends: 2821 [2020-10-27 06:08:58,666 INFO L226 Difference]: Without dead ends: 1881 [2020-10-27 06:08:58,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-27 06:08:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1878. [2020-10-27 06:08:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-10-27 06:08:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3268 transitions. [2020-10-27 06:08:58,768 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3268 transitions. Word has length 202 [2020-10-27 06:08:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:58,769 INFO L481 AbstractCegarLoop]: Abstraction has 1878 states and 3268 transitions. [2020-10-27 06:08:58,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3268 transitions. [2020-10-27 06:08:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 06:08:58,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:58,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:58,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:08:58,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:58,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:58,777 INFO L82 PathProgramCache]: Analyzing trace with hash 359454066, now seen corresponding path program 1 times [2020-10-27 06:08:58,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:58,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325804321] [2020-10-27 06:08:58,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 06:09:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:05,370 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:05,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 06:09:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:05,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325804321] [2020-10-27 06:09:05,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:05,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:05,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153664126] [2020-10-27 06:09:05,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:05,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:05,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:05,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:05,650 INFO L87 Difference]: Start difference. First operand 1878 states and 3268 transitions. Second operand 5 states. [2020-10-27 06:09:14,743 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:14,915 INFO L93 Difference]: Finished difference Result 5336 states and 9267 transitions. [2020-10-27 06:09:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:14,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-27 06:09:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:14,943 INFO L225 Difference]: With dead ends: 5336 [2020-10-27 06:09:14,943 INFO L226 Difference]: Without dead ends: 3655 [2020-10-27 06:09:14,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2020-10-27 06:09:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3652. [2020-10-27 06:09:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2020-10-27 06:09:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 6335 transitions. [2020-10-27 06:09:15,209 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 6335 transitions. Word has length 203 [2020-10-27 06:09:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:15,210 INFO L481 AbstractCegarLoop]: Abstraction has 3652 states and 6335 transitions. [2020-10-27 06:09:15,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 6335 transitions. [2020-10-27 06:09:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 06:09:15,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:15,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:15,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:09:15,223 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1248960854, now seen corresponding path program 1 times [2020-10-27 06:09:15,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:15,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003572456] [2020-10-27 06:09:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:20,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 06:09:20,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-27 06:09:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:21,705 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:09:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:21,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003572456] [2020-10-27 06:09:21,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:21,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:21,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589834952] [2020-10-27 06:09:21,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:21,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:21,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:21,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:21,961 INFO L87 Difference]: Start difference. First operand 3652 states and 6335 transitions. Second operand 5 states. [2020-10-27 06:09:30,834 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:31,054 INFO L93 Difference]: Finished difference Result 10735 states and 18616 transitions. [2020-10-27 06:09:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:31,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-27 06:09:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:31,094 INFO L225 Difference]: With dead ends: 10735 [2020-10-27 06:09:31,095 INFO L226 Difference]: Without dead ends: 7236 [2020-10-27 06:09:31,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2020-10-27 06:09:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7233. [2020-10-27 06:09:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-27 06:09:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 12504 transitions. [2020-10-27 06:09:31,623 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 12504 transitions. Word has length 203 [2020-10-27 06:09:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:31,624 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 12504 transitions. [2020-10-27 06:09:31,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 12504 transitions. [2020-10-27 06:09:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 06:09:31,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:31,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:31,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:09:31,644 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:31,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:31,645 INFO L82 PathProgramCache]: Analyzing trace with hash 883780953, now seen corresponding path program 1 times [2020-10-27 06:09:31,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:31,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531190308] [2020-10-27 06:09:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:09:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:09:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 06:09:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:38,103 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 06:09:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:09:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:09:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:38,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531190308] [2020-10-27 06:09:38,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:38,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:09:38,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305356060] [2020-10-27 06:09:38,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 06:09:38,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 06:09:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 06:09:38,316 INFO L87 Difference]: Start difference. First operand 7233 states and 12504 transitions. Second operand 8 states. [2020-10-27 06:09:39,658 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:47,496 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 06:09:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:48,348 INFO L93 Difference]: Finished difference Result 14691 states and 25056 transitions. [2020-10-27 06:09:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:09:48,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-10-27 06:09:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:48,398 INFO L225 Difference]: With dead ends: 14691 [2020-10-27 06:09:48,399 INFO L226 Difference]: Without dead ends: 11468 [2020-10-27 06:09:48,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:09:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2020-10-27 06:09:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 7277. [2020-10-27 06:09:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7277 states. [2020-10-27 06:09:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 12528 transitions. [2020-10-27 06:09:49,134 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 12528 transitions. Word has length 204 [2020-10-27 06:09:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:49,134 INFO L481 AbstractCegarLoop]: Abstraction has 7277 states and 12528 transitions. [2020-10-27 06:09:49,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 06:09:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 12528 transitions. [2020-10-27 06:09:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 06:09:49,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:49,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:49,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:09:49,155 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1296728680, now seen corresponding path program 1 times [2020-10-27 06:09:49,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:49,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962640015] [2020-10-27 06:09:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 06:09:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:09:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 06:09:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-27 06:09:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:55,617 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:55,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:09:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:55,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962640015] [2020-10-27 06:09:55,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:55,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:55,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851882915] [2020-10-27 06:09:55,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:55,958 INFO L87 Difference]: Start difference. First operand 7277 states and 12528 transitions. Second operand 5 states. [2020-10-27 06:10:05,004 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:05,300 INFO L93 Difference]: Finished difference Result 21079 states and 36240 transitions. [2020-10-27 06:10:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:05,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-27 06:10:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:05,336 INFO L225 Difference]: With dead ends: 21079 [2020-10-27 06:10:05,336 INFO L226 Difference]: Without dead ends: 14188 [2020-10-27 06:10:05,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14188 states. [2020-10-27 06:10:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14188 to 14185. [2020-10-27 06:10:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14185 states. [2020-10-27 06:10:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 24326 transitions. [2020-10-27 06:10:06,681 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 24326 transitions. Word has length 204 [2020-10-27 06:10:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:06,682 INFO L481 AbstractCegarLoop]: Abstraction has 14185 states and 24326 transitions. [2020-10-27 06:10:06,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 24326 transitions. [2020-10-27 06:10:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 06:10:06,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:06,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:06,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:10:06,720 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash -187095865, now seen corresponding path program 1 times [2020-10-27 06:10:06,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:06,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181747344] [2020-10-27 06:10:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:06,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:11,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 06:10:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:13,114 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:13,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:13,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:13,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181747344] [2020-10-27 06:10:13,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:13,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:13,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688139680] [2020-10-27 06:10:13,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:13,257 INFO L87 Difference]: Start difference. First operand 14185 states and 24326 transitions. Second operand 5 states. [2020-10-27 06:10:22,486 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:22,906 INFO L93 Difference]: Finished difference Result 42287 states and 72560 transitions. [2020-10-27 06:10:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:22,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-27 06:10:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:22,976 INFO L225 Difference]: With dead ends: 42287 [2020-10-27 06:10:22,976 INFO L226 Difference]: Without dead ends: 28139 [2020-10-27 06:10:23,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28139 states. [2020-10-27 06:10:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28139 to 28136. [2020-10-27 06:10:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28136 states. [2020-10-27 06:10:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28136 states to 28136 states and 48086 transitions. [2020-10-27 06:10:25,234 INFO L78 Accepts]: Start accepts. Automaton has 28136 states and 48086 transitions. Word has length 204 [2020-10-27 06:10:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:25,235 INFO L481 AbstractCegarLoop]: Abstraction has 28136 states and 48086 transitions. [2020-10-27 06:10:25,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28136 states and 48086 transitions. [2020-10-27 06:10:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 06:10:25,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:25,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:25,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:10:25,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1566231533, now seen corresponding path program 1 times [2020-10-27 06:10:25,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:25,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312303680] [2020-10-27 06:10:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 06:10:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:31,687 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:31,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312303680] [2020-10-27 06:10:31,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:31,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:31,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936259834] [2020-10-27 06:10:31,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:31,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:31,819 INFO L87 Difference]: Start difference. First operand 28136 states and 48086 transitions. Second operand 5 states. [2020-10-27 06:10:42,127 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:43,071 INFO L93 Difference]: Finished difference Result 83110 states and 142018 transitions. [2020-10-27 06:10:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:43,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-27 06:10:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:43,184 INFO L225 Difference]: With dead ends: 83110 [2020-10-27 06:10:43,184 INFO L226 Difference]: Without dead ends: 55411 [2020-10-27 06:10:43,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55411 states. [2020-10-27 06:10:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55411 to 55408. [2020-10-27 06:10:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55408 states. [2020-10-27 06:10:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55408 states to 55408 states and 94222 transitions. [2020-10-27 06:10:47,896 INFO L78 Accepts]: Start accepts. Automaton has 55408 states and 94222 transitions. Word has length 205 [2020-10-27 06:10:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:47,897 INFO L481 AbstractCegarLoop]: Abstraction has 55408 states and 94222 transitions. [2020-10-27 06:10:47,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 55408 states and 94222 transitions. [2020-10-27 06:10:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 06:10:47,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:47,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:47,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:10:47,955 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash 560310493, now seen corresponding path program 1 times [2020-10-27 06:10:47,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:47,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764449816] [2020-10-27 06:10:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 06:10:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:54,355 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:54,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764449816] [2020-10-27 06:10:54,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:54,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:54,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699678464] [2020-10-27 06:10:54,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:54,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:54,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:54,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:54,485 INFO L87 Difference]: Start difference. First operand 55408 states and 94222 transitions. Second operand 5 states. [2020-10-27 06:11:08,087 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:11:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:09,963 INFO L93 Difference]: Finished difference Result 165319 states and 281293 transitions. [2020-10-27 06:11:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:09,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-27 06:11:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:10,314 INFO L225 Difference]: With dead ends: 165319 [2020-10-27 06:11:10,315 INFO L226 Difference]: Without dead ends: 109984 [2020-10-27 06:11:10,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109984 states. [2020-10-27 06:11:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109984 to 109981. [2020-10-27 06:11:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109981 states. [2020-10-27 06:11:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109981 states to 109981 states and 186406 transitions. [2020-10-27 06:11:19,572 INFO L78 Accepts]: Start accepts. Automaton has 109981 states and 186406 transitions. Word has length 205 [2020-10-27 06:11:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:19,573 INFO L481 AbstractCegarLoop]: Abstraction has 109981 states and 186406 transitions. [2020-10-27 06:11:19,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 109981 states and 186406 transitions. [2020-10-27 06:11:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 06:11:19,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:19,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:19,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:11:19,946 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1853487216, now seen corresponding path program 1 times [2020-10-27 06:11:19,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:19,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859708632] [2020-10-27 06:11:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 06:11:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:26,488 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:26,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859708632] [2020-10-27 06:11:26,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:26,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:26,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775762402] [2020-10-27 06:11:26,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:26,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:26,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:26,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:26,627 INFO L87 Difference]: Start difference. First operand 109981 states and 186406 transitions. Second operand 5 states. [2020-10-27 06:11:49,435 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 418