/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:46:16,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:46:16,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:46:16,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:46:16,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:46:16,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:46:16,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:46:16,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:46:16,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:46:16,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:46:16,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:46:16,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:46:16,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:46:16,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:46:16,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:46:16,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:46:16,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:46:16,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:46:16,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:46:16,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:46:16,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:46:16,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:46:16,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:46:16,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:46:16,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:46:16,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:46:16,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:46:16,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:46:16,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:46:16,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:46:16,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:46:16,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:46:16,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:46:16,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:46:16,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:46:16,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:46:16,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:46:16,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:46:16,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:46:16,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:46:16,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:46:16,708 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 [2020-10-29 13:46:16,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:46:16,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:46:16,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:46:16,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:46:16,736 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:46:16,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:46:16,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:46:16,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:46:16,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:46:16,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:46:16,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:46:16,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:46:16,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:46:16,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:46:16,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:46:16,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:46:16,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:46:16,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:46:16,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:46:16,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:46:16,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:46:16,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:46:16,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:46:16,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:46:16,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:46:16,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:46:16,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:46:16,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:46:16,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:46:16,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:46:17,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:46:17,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:46:17,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:46:17,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:46:17,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:46:17,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:46:17,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eceb31/e12d39f4a50d4d2b8b671ba816c4ea5b/FLAGb01912d60 [2020-10-29 13:46:18,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:46:18,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:46:18,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eceb31/e12d39f4a50d4d2b8b671ba816c4ea5b/FLAGb01912d60 [2020-10-29 13:46:18,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eceb31/e12d39f4a50d4d2b8b671ba816c4ea5b [2020-10-29 13:46:18,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:46:18,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:46:18,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:46:18,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:46:18,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:46:18,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:46:18" (1/1) ... [2020-10-29 13:46:18,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7cc87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:18, skipping insertion in model container [2020-10-29 13:46:18,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:46:18" (1/1) ... [2020-10-29 13:46:18,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:46:18,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:46:19,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:46:19,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:46:20,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:46:20,457 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:46:20,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20 WrapperNode [2020-10-29 13:46:20,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:46:20,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:46:20,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:46:20,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:46:20,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (1/1) ... [2020-10-29 13:46:20,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:46:20,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:46:20,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:46:20,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:46:20,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (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 [2020-10-29 13:46:20,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:46:20,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:46:20,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:46:20,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:46:20,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:46:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:46:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:46:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:46:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:46:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:46:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:46:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:46:24,706 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:46:24,707 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:46:24,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:46:24 BoogieIcfgContainer [2020-10-29 13:46:24,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:46:24,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:46:24,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:46:24,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:46:24,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:46:18" (1/3) ... [2020-10-29 13:46:24,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd1f4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:46:24, skipping insertion in model container [2020-10-29 13:46:24,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:20" (2/3) ... [2020-10-29 13:46:24,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd1f4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:46:24, skipping insertion in model container [2020-10-29 13:46:24,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:46:24" (3/3) ... [2020-10-29 13:46:24,722 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:46:24,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:46:24,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:46:24,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:46:24,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:46:24,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:46:24,792 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:46:24,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:46:24,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:46:24,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:46:24,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:46:24,793 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:46:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states. [2020-10-29 13:46:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:46:24,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:24,858 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] [2020-10-29 13:46:24,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:24,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1940053764, now seen corresponding path program 1 times [2020-10-29 13:46:24,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:24,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40137049] [2020-10-29 13:46:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:46:30,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:46:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 13:46:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:46:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:46:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:46:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:46:33,208 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:46:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:46:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:46:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 13:46:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:33,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:46:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:46:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:46:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:46:33,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40137049] [2020-10-29 13:46:33,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:46:33,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:46:33,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743544769] [2020-10-29 13:46:33,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:46:33,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:46:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:46:33,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:46:33,481 INFO L87 Difference]: Start difference. First operand 1115 states. Second operand 6 states. [2020-10-29 13:46:36,278 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:46:50,500 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:46:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:46:51,681 INFO L93 Difference]: Finished difference Result 1634 states and 2949 transitions. [2020-10-29 13:46:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:46:51,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 13:46:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:46:51,715 INFO L225 Difference]: With dead ends: 1634 [2020-10-29 13:46:51,715 INFO L226 Difference]: Without dead ends: 1115 [2020-10-29 13:46:51,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:46:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2020-10-29 13:46:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1109. [2020-10-29 13:46:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-10-29 13:46:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1405 transitions. [2020-10-29 13:46:51,903 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1405 transitions. Word has length 69 [2020-10-29 13:46:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:46:51,907 INFO L481 AbstractCegarLoop]: Abstraction has 1109 states and 1405 transitions. [2020-10-29 13:46:51,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:46:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1405 transitions. [2020-10-29 13:46:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:46:51,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:51,918 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] [2020-10-29 13:46:51,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:46:51,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash -462731809, now seen corresponding path program 1 times [2020-10-29 13:46:51,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:51,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902728030] [2020-10-29 13:46:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:52,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:57,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:46:57,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:46:57,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:46:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:57,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:46:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:46:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:46:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:59,953 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:46:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:00,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:00,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:00,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 13:47:00,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:00,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:00,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902728030] [2020-10-29 13:47:00,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:00,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:00,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268623707] [2020-10-29 13:47:00,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:00,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:00,113 INFO L87 Difference]: Start difference. First operand 1109 states and 1405 transitions. Second operand 6 states. [2020-10-29 13:47:02,890 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-29 13:47:11,617 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 651 [2020-10-29 13:47:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:12,646 INFO L93 Difference]: Finished difference Result 1952 states and 2578 transitions. [2020-10-29 13:47:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:12,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 13:47:12,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:12,654 INFO L225 Difference]: With dead ends: 1952 [2020-10-29 13:47:12,655 INFO L226 Difference]: Without dead ends: 1136 [2020-10-29 13:47:12,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:47:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2020-10-29 13:47:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1130. [2020-10-29 13:47:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-29 13:47:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1503 transitions. [2020-10-29 13:47:12,724 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1503 transitions. Word has length 69 [2020-10-29 13:47:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:12,724 INFO L481 AbstractCegarLoop]: Abstraction has 1130 states and 1503 transitions. [2020-10-29 13:47:12,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1503 transitions. [2020-10-29 13:47:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:47:12,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:12,728 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] [2020-10-29 13:47:12,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:47:12,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1180067250, now seen corresponding path program 1 times [2020-10-29 13:47:12,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:12,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56162594] [2020-10-29 13:47:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:17,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:47:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:47:17,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:20,680 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:47:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 13:47:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:20,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:20,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56162594] [2020-10-29 13:47:20,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:20,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:47:20,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951971958] [2020-10-29 13:47:20,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:20,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:20,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:20,866 INFO L87 Difference]: Start difference. First operand 1130 states and 1503 transitions. Second operand 6 states. [2020-10-29 13:47:23,772 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 647 [2020-10-29 13:47:33,117 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 648 [2020-10-29 13:47:36,044 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 647 [2020-10-29 13:47:39,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:39,568 INFO L93 Difference]: Finished difference Result 5145 states and 7370 transitions. [2020-10-29 13:47:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:47:39,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-29 13:47:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:39,604 INFO L225 Difference]: With dead ends: 5145 [2020-10-29 13:47:39,605 INFO L226 Difference]: Without dead ends: 4213 [2020-10-29 13:47:39,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:47:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-10-29 13:47:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 2496. [2020-10-29 13:47:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-10-29 13:47:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3522 transitions. [2020-10-29 13:47:39,818 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3522 transitions. Word has length 70 [2020-10-29 13:47:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:39,819 INFO L481 AbstractCegarLoop]: Abstraction has 2496 states and 3522 transitions. [2020-10-29 13:47:39,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3522 transitions. [2020-10-29 13:47:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:47:39,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:39,825 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] [2020-10-29 13:47:39,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:47:39,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash 921100505, now seen corresponding path program 1 times [2020-10-29 13:47:39,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:39,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173312663] [2020-10-29 13:47:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:44,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:47:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:47:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:47:44,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:44,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:47:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:47:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:47,981 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:47:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:48,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 13:47:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:48,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:48,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173312663] [2020-10-29 13:47:48,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:48,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:47:48,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531039800] [2020-10-29 13:47:48,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:47:48,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:47:48,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:47:48,170 INFO L87 Difference]: Start difference. First operand 2496 states and 3522 transitions. Second operand 8 states. [2020-10-29 13:47:51,165 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:47:59,659 WARN L193 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:48:04,104 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-29 13:48:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:04,471 INFO L93 Difference]: Finished difference Result 11278 states and 16870 transitions. [2020-10-29 13:48:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:48:04,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-29 13:48:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:04,521 INFO L225 Difference]: With dead ends: 11278 [2020-10-29 13:48:04,522 INFO L226 Difference]: Without dead ends: 9464 [2020-10-29 13:48:04,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:48:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9464 states. [2020-10-29 13:48:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9464 to 2323. [2020-10-29 13:48:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-10-29 13:48:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3263 transitions. [2020-10-29 13:48:04,745 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3263 transitions. Word has length 70 [2020-10-29 13:48:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:04,746 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3263 transitions. [2020-10-29 13:48:04,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:48:04,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3263 transitions. [2020-10-29 13:48:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:48:04,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:04,749 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] [2020-10-29 13:48:04,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:48:04,750 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 665779874, now seen corresponding path program 1 times [2020-10-29 13:48:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:04,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386452421] [2020-10-29 13:48:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:48:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:48:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:48:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:09,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:48:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:48:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:48:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:12,824 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:48:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:48:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:12,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386452421] [2020-10-29 13:48:12,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:12,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:48:12,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101279276] [2020-10-29 13:48:12,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:48:12,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:48:12,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:48:12,999 INFO L87 Difference]: Start difference. First operand 2323 states and 3263 transitions. Second operand 8 states. [2020-10-29 13:48:15,852 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:48:24,538 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 657 [2020-10-29 13:48:28,803 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:48:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:29,196 INFO L93 Difference]: Finished difference Result 9874 states and 14633 transitions. [2020-10-29 13:48:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:48:29,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-29 13:48:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:29,229 INFO L225 Difference]: With dead ends: 9874 [2020-10-29 13:48:29,229 INFO L226 Difference]: Without dead ends: 8358 [2020-10-29 13:48:29,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:48:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8358 states. [2020-10-29 13:48:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8358 to 2378. [2020-10-29 13:48:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2378 states. [2020-10-29 13:48:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 3305 transitions. [2020-10-29 13:48:29,489 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 3305 transitions. Word has length 70 [2020-10-29 13:48:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:29,490 INFO L481 AbstractCegarLoop]: Abstraction has 2378 states and 3305 transitions. [2020-10-29 13:48:29,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:48:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 3305 transitions. [2020-10-29 13:48:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:48:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:29,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:48:29,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:48:29,494 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1825789490, now seen corresponding path program 1 times [2020-10-29 13:48:29,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:29,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669094334] [2020-10-29 13:48:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:48:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:48:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:48:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:37,435 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:48:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:37,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669094334] [2020-10-29 13:48:37,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:37,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:48:37,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735907595] [2020-10-29 13:48:37,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:48:37,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:48:37,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:37,535 INFO L87 Difference]: Start difference. First operand 2378 states and 3305 transitions. Second operand 9 states. [2020-10-29 13:48:40,395 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:48:48,858 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:48:51,965 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-29 13:48:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:54,507 INFO L93 Difference]: Finished difference Result 10619 states and 15579 transitions. [2020-10-29 13:48:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:48:54,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-29 13:48:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:54,534 INFO L225 Difference]: With dead ends: 10619 [2020-10-29 13:48:54,534 INFO L226 Difference]: Without dead ends: 8597 [2020-10-29 13:48:54,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:48:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8597 states. [2020-10-29 13:48:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 4170. [2020-10-29 13:48:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-10-29 13:48:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6020 transitions. [2020-10-29 13:48:55,133 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6020 transitions. Word has length 71 [2020-10-29 13:48:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:55,134 INFO L481 AbstractCegarLoop]: Abstraction has 4170 states and 6020 transitions. [2020-10-29 13:48:55,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:48:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6020 transitions. [2020-10-29 13:48:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:48:55,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:55,144 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] [2020-10-29 13:48:55,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:48:55,144 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 747309376, now seen corresponding path program 1 times [2020-10-29 13:48:55,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:55,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466895159] [2020-10-29 13:48:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:00,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:49:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:49:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:49:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:03,111 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:49:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:49:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:49:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:03,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466895159] [2020-10-29 13:49:03,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:03,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:03,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411713742] [2020-10-29 13:49:03,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:49:03,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:03,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:49:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:49:03,275 INFO L87 Difference]: Start difference. First operand 4170 states and 6020 transitions. Second operand 8 states. [2020-10-29 13:49:06,111 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:49:14,462 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 657 [2020-10-29 13:49:18,736 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:49:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:19,562 INFO L93 Difference]: Finished difference Result 17012 states and 25066 transitions. [2020-10-29 13:49:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:49:19,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-29 13:49:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:19,594 INFO L225 Difference]: With dead ends: 17012 [2020-10-29 13:49:19,595 INFO L226 Difference]: Without dead ends: 13382 [2020-10-29 13:49:19,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2020-10-29 13:49:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 4154. [2020-10-29 13:49:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4154 states. [2020-10-29 13:49:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 5964 transitions. [2020-10-29 13:49:20,205 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 5964 transitions. Word has length 71 [2020-10-29 13:49:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:20,205 INFO L481 AbstractCegarLoop]: Abstraction has 4154 states and 5964 transitions. [2020-10-29 13:49:20,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:49:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 5964 transitions. [2020-10-29 13:49:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:49:20,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:20,209 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] [2020-10-29 13:49:20,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:49:20,209 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash -862686468, now seen corresponding path program 1 times [2020-10-29 13:49:20,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:20,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14932823] [2020-10-29 13:49:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:20,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:25,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:49:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:49:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:49:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:28,179 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:49:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:28,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:49:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:28,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14932823] [2020-10-29 13:49:28,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:28,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:28,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734007958] [2020-10-29 13:49:28,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:49:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:49:28,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:49:28,304 INFO L87 Difference]: Start difference. First operand 4154 states and 5964 transitions. Second operand 8 states. [2020-10-29 13:49:31,185 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-29 13:49:39,766 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification that was a NOOP. DAG size: 657 [2020-10-29 13:49:44,693 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:49:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:46,076 INFO L93 Difference]: Finished difference Result 18785 states and 27437 transitions. [2020-10-29 13:49:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:49:46,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-29 13:49:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:46,119 INFO L225 Difference]: With dead ends: 18785 [2020-10-29 13:49:46,120 INFO L226 Difference]: Without dead ends: 15739 [2020-10-29 13:49:46,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15739 states. [2020-10-29 13:49:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15739 to 4222. [2020-10-29 13:49:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4222 states. [2020-10-29 13:49:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 5984 transitions. [2020-10-29 13:49:46,759 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 5984 transitions. Word has length 72 [2020-10-29 13:49:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:46,760 INFO L481 AbstractCegarLoop]: Abstraction has 4222 states and 5984 transitions. [2020-10-29 13:49:46,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:49:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 5984 transitions. [2020-10-29 13:49:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:49:46,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:46,763 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] [2020-10-29 13:49:46,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:49:46,764 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:46,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1036076885, now seen corresponding path program 1 times [2020-10-29 13:49:46,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:46,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051692437] [2020-10-29 13:49:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:49:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:54,754 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 646 [2020-10-29 13:49:54,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:49:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:49:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:54,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051692437] [2020-10-29 13:49:54,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:54,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:54,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064572934] [2020-10-29 13:49:54,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:49:54,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:54,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:49:54,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:49:54,864 INFO L87 Difference]: Start difference. First operand 4222 states and 5984 transitions. Second operand 8 states.