/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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:06:15,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:06:15,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:06:15,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:06:15,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:06:15,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:06:15,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:06:15,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:06:15,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:06:15,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:06:15,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:06:15,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:06:15,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:06:15,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:06:15,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:06:15,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:06:15,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:06:15,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:06:15,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:06:15,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:06:15,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:06:15,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:06:15,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:06:15,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:06:15,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:06:15,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:06:15,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:06:15,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:06:15,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:06:15,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:06:15,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:06:15,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:06:15,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:06:15,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:06:15,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:06:15,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:06:15,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:06:15,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:06:15,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:06:15,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:06:15,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:06:15,882 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 14:06:15,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:06:15,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:06:15,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:06:15,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:06:15,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:06:15,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:06:15,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:06:15,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:06:15,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:06:15,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:06:15,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:06:15,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:06:15,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:06:15,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:06:15,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:06:15,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:06:15,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:06:15,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:06:15,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:06:15,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:06:15,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:06:15,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:06:15,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:06:15,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:06:15,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:06:15,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:06:15,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:06:15,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:06:15,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:06:15,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:06:16,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:06:16,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:06:16,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:06:16,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:06:16,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:06:16,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:16,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4825ed2/f576ea03906248c585c5e0f357125412/FLAGfd308f04e [2020-10-29 14:06:17,321 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:06:17,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:17,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4825ed2/f576ea03906248c585c5e0f357125412/FLAGfd308f04e [2020-10-29 14:06:17,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4825ed2/f576ea03906248c585c5e0f357125412 [2020-10-29 14:06:17,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:06:17,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:06:17,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:17,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:06:17,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:06:17,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:17" (1/1) ... [2020-10-29 14:06:17,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec93ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:17, skipping insertion in model container [2020-10-29 14:06:17,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:17" (1/1) ... [2020-10-29 14:06:17,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:06:17,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:06:18,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:18,297 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:06:18,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:18,563 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:06:18,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18 WrapperNode [2020-10-29 14:06:18,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:18,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:06:18,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:06:18,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:06:18,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (1/1) ... [2020-10-29 14:06:18,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:06:18,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:06:18,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:06:18,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:06:18,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (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 14:06:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:06:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:06:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:06:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:06:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:06:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:06:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:06:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:06:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:06:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:06:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:06:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:06:20,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:06:20,550 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:06:20,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:20 BoogieIcfgContainer [2020-10-29 14:06:20,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:06:20,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:06:20,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:06:20,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:06:20,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:06:17" (1/3) ... [2020-10-29 14:06:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722d89b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:20, skipping insertion in model container [2020-10-29 14:06:20,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:18" (2/3) ... [2020-10-29 14:06:20,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722d89b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:20, skipping insertion in model container [2020-10-29 14:06:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:20" (3/3) ... [2020-10-29 14:06:20,562 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:20,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:06:20,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:06:20,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:06:20,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:06:20,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:06:20,625 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:06:20,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:06:20,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:06:20,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:06:20,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:06:20,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:06:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2020-10-29 14:06:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:06:20,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:20,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:06:20,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash -566979542, now seen corresponding path program 1 times [2020-10-29 14:06:20,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:20,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15939234] [2020-10-29 14:06:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:26,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:26,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 14:06:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:06:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 14:06:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:26,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 14:06:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 14:06:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:06:27,158 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 14:06:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:27,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:27,295 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 14:06:27,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15939234] [2020-10-29 14:06:27,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:27,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:06:27,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048536880] [2020-10-29 14:06:27,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:06:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:27,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:06:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:06:27,324 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2020-10-29 14:06:28,101 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:06:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:30,875 INFO L93 Difference]: Finished difference Result 643 states and 1110 transitions. [2020-10-29 14:06:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:06:30,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 14:06:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:30,908 INFO L225 Difference]: With dead ends: 643 [2020-10-29 14:06:30,908 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 14:06:30,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 14:06:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2020-10-29 14:06:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-29 14:06:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 792 transitions. [2020-10-29 14:06:31,019 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 792 transitions. Word has length 123 [2020-10-29 14:06:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:31,020 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 792 transitions. [2020-10-29 14:06:31,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:06:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 792 transitions. [2020-10-29 14:06:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 14:06:31,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:31,036 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] [2020-10-29 14:06:31,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:06:31,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 197511942, now seen corresponding path program 1 times [2020-10-29 14:06:31,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:31,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015130523] [2020-10-29 14:06:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:36,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 14:06:36,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:06:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:06:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:36,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:06:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 14:06:36,972 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:37,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:37,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:37,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:06:37,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:37,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:37,106 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 14:06:37,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015130523] [2020-10-29 14:06:37,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:37,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:37,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444910748] [2020-10-29 14:06:37,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:37,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:37,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:37,110 INFO L87 Difference]: Start difference. First operand 478 states and 792 transitions. Second operand 5 states. [2020-10-29 14:06:40,331 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:06:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:40,501 INFO L93 Difference]: Finished difference Result 1352 states and 2235 transitions. [2020-10-29 14:06:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:40,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 14:06:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:40,511 INFO L225 Difference]: With dead ends: 1352 [2020-10-29 14:06:40,511 INFO L226 Difference]: Without dead ends: 915 [2020-10-29 14:06:40,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-29 14:06:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 912. [2020-10-29 14:06:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-29 14:06:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1502 transitions. [2020-10-29 14:06:40,599 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1502 transitions. Word has length 126 [2020-10-29 14:06:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:40,599 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1502 transitions. [2020-10-29 14:06:40,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1502 transitions. [2020-10-29 14:06:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:06:40,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:40,603 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] [2020-10-29 14:06:40,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:06:40,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1593021485, now seen corresponding path program 1 times [2020-10-29 14:06:40,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:40,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119560939] [2020-10-29 14:06:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:06:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:06:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 14:06:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:45,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:06:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:46,705 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:06:46,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:46,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:46,831 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 14:06:46,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119560939] [2020-10-29 14:06:46,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:46,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:46,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137623136] [2020-10-29 14:06:46,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:46,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:46,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:46,837 INFO L87 Difference]: Start difference. First operand 912 states and 1502 transitions. Second operand 5 states. [2020-10-29 14:06:49,963 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:06:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:50,116 INFO L93 Difference]: Finished difference Result 2604 states and 4278 transitions. [2020-10-29 14:06:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:50,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:06:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:50,128 INFO L225 Difference]: With dead ends: 2604 [2020-10-29 14:06:50,129 INFO L226 Difference]: Without dead ends: 1755 [2020-10-29 14:06:50,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-10-29 14:06:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1752. [2020-10-29 14:06:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1752 states. [2020-10-29 14:06:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2864 transitions. [2020-10-29 14:06:50,253 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2864 transitions. Word has length 127 [2020-10-29 14:06:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:50,254 INFO L481 AbstractCegarLoop]: Abstraction has 1752 states and 2864 transitions. [2020-10-29 14:06:50,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2864 transitions. [2020-10-29 14:06:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:06:50,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:50,259 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] [2020-10-29 14:06:50,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:06:50,260 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -779574682, now seen corresponding path program 1 times [2020-10-29 14:06:50,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:50,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027683146] [2020-10-29 14:06:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:06:55,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:56,105 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:56,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:56,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:56,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:56,218 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 14:06:56,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027683146] [2020-10-29 14:06:56,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:56,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:56,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499963723] [2020-10-29 14:06:56,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:56,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:56,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:56,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:56,221 INFO L87 Difference]: Start difference. First operand 1752 states and 2864 transitions. Second operand 5 states. [2020-10-29 14:06:59,858 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:00,053 INFO L93 Difference]: Finished difference Result 4958 states and 8085 transitions. [2020-10-29 14:07:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:00,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:07:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:00,076 INFO L225 Difference]: With dead ends: 4958 [2020-10-29 14:07:00,076 INFO L226 Difference]: Without dead ends: 3411 [2020-10-29 14:07:00,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2020-10-29 14:07:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3408. [2020-10-29 14:07:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-10-29 14:07:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5549 transitions. [2020-10-29 14:07:00,383 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5549 transitions. Word has length 127 [2020-10-29 14:07:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:00,384 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 5549 transitions. [2020-10-29 14:07:00,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5549 transitions. [2020-10-29 14:07:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:07:00,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:00,392 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] [2020-10-29 14:07:00,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:07:00,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -396425256, now seen corresponding path program 1 times [2020-10-29 14:07:00,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:00,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879736106] [2020-10-29 14:07:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:02,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:07:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:06,255 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:06,347 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 14:07:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879736106] [2020-10-29 14:07:06,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:06,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978199574] [2020-10-29 14:07:06,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:06,349 INFO L87 Difference]: Start difference. First operand 3408 states and 5549 transitions. Second operand 5 states. [2020-10-29 14:07:09,708 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:09,893 INFO L93 Difference]: Finished difference Result 9936 states and 16156 transitions. [2020-10-29 14:07:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:09,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:07:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:09,929 INFO L225 Difference]: With dead ends: 9936 [2020-10-29 14:07:09,929 INFO L226 Difference]: Without dead ends: 6677 [2020-10-29 14:07:09,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2020-10-29 14:07:10,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6674. [2020-10-29 14:07:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6674 states. [2020-10-29 14:07:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6674 states to 6674 states and 10792 transitions. [2020-10-29 14:07:10,402 INFO L78 Accepts]: Start accepts. Automaton has 6674 states and 10792 transitions. Word has length 128 [2020-10-29 14:07:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:10,403 INFO L481 AbstractCegarLoop]: Abstraction has 6674 states and 10792 transitions. [2020-10-29 14:07:10,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6674 states and 10792 transitions. [2020-10-29 14:07:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:07:10,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:10,417 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] [2020-10-29 14:07:10,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:07:10,418 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:10,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:10,419 INFO L82 PathProgramCache]: Analyzing trace with hash -436598801, now seen corresponding path program 1 times [2020-10-29 14:07:10,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:10,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420526148] [2020-10-29 14:07:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:15,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:07:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:07:15,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:16,283 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:16,385 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 14:07:16,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420526148] [2020-10-29 14:07:16,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:16,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:16,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353281573] [2020-10-29 14:07:16,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:16,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:16,388 INFO L87 Difference]: Start difference. First operand 6674 states and 10792 transitions. Second operand 5 states. [2020-10-29 14:07:20,467 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:20,782 INFO L93 Difference]: Finished difference Result 19604 states and 31666 transitions. [2020-10-29 14:07:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:20,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:07:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:20,847 INFO L225 Difference]: With dead ends: 19604 [2020-10-29 14:07:20,847 INFO L226 Difference]: Without dead ends: 13093 [2020-10-29 14:07:20,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13093 states. [2020-10-29 14:07:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13093 to 13090. [2020-10-29 14:07:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13090 states. [2020-10-29 14:07:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13090 states to 13090 states and 21074 transitions. [2020-10-29 14:07:22,036 INFO L78 Accepts]: Start accepts. Automaton has 13090 states and 21074 transitions. Word has length 128 [2020-10-29 14:07:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:22,037 INFO L481 AbstractCegarLoop]: Abstraction has 13090 states and 21074 transitions. [2020-10-29 14:07:22,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13090 states and 21074 transitions. [2020-10-29 14:07:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 14:07:22,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:22,062 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] [2020-10-29 14:07:22,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:07:22,062 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:22,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1933540526, now seen corresponding path program 1 times [2020-10-29 14:07:22,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:22,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146189837] [2020-10-29 14:07:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:07:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 14:07:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:07:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:27,778 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:27,833 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 14:07:27,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146189837] [2020-10-29 14:07:27,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:27,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:07:27,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236183952] [2020-10-29 14:07:27,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:07:27,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:07:27,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:07:27,835 INFO L87 Difference]: Start difference. First operand 13090 states and 21074 transitions. Second operand 4 states. [2020-10-29 14:07:28,601 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:07:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:31,681 INFO L93 Difference]: Finished difference Result 28424 states and 46646 transitions. [2020-10-29 14:07:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:07:31,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-29 14:07:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:31,728 INFO L225 Difference]: With dead ends: 28424 [2020-10-29 14:07:31,728 INFO L226 Difference]: Without dead ends: 20453 [2020-10-29 14:07:31,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20453 states. [2020-10-29 14:07:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20453 to 20450. [2020-10-29 14:07:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20450 states. [2020-10-29 14:07:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20450 states to 20450 states and 33266 transitions. [2020-10-29 14:07:32,987 INFO L78 Accepts]: Start accepts. Automaton has 20450 states and 33266 transitions. Word has length 129 [2020-10-29 14:07:32,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:32,987 INFO L481 AbstractCegarLoop]: Abstraction has 20450 states and 33266 transitions. [2020-10-29 14:07:32,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:07:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20450 states and 33266 transitions. [2020-10-29 14:07:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:07:33,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:33,015 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] [2020-10-29 14:07:33,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:07:33,015 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash -547140879, now seen corresponding path program 1 times [2020-10-29 14:07:33,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:33,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297063850] [2020-10-29 14:07:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 14:07:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:38,773 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:38,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:38,868 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 14:07:38,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297063850] [2020-10-29 14:07:38,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:38,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:38,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357910616] [2020-10-29 14:07:38,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:38,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:38,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:38,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:38,870 INFO L87 Difference]: Start difference. First operand 20450 states and 33266 transitions. Second operand 5 states. [2020-10-29 14:07:42,776 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:44,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:44,159 INFO L93 Difference]: Finished difference Result 59448 states and 96570 transitions. [2020-10-29 14:07:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:44,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 14:07:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:44,251 INFO L225 Difference]: With dead ends: 59448 [2020-10-29 14:07:44,251 INFO L226 Difference]: Without dead ends: 39709 [2020-10-29 14:07:44,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39709 states. [2020-10-29 14:07:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39709 to 39706. [2020-10-29 14:07:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39706 states. [2020-10-29 14:07:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39706 states to 39706 states and 64054 transitions. [2020-10-29 14:07:47,314 INFO L78 Accepts]: Start accepts. Automaton has 39706 states and 64054 transitions. Word has length 133 [2020-10-29 14:07:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:47,315 INFO L481 AbstractCegarLoop]: Abstraction has 39706 states and 64054 transitions. [2020-10-29 14:07:47,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 39706 states and 64054 transitions. [2020-10-29 14:07:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:07:47,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:47,354 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] [2020-10-29 14:07:47,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:07:47,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:47,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1925413036, now seen corresponding path program 1 times [2020-10-29 14:07:47,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:47,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91373730] [2020-10-29 14:07:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 14:07:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:53,166 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:53,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:53,231 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 14:07:53,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91373730] [2020-10-29 14:07:53,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:53,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:07:53,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343242134] [2020-10-29 14:07:53,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:07:53,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:07:53,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:07:53,233 INFO L87 Difference]: Start difference. First operand 39706 states and 64054 transitions. Second operand 4 states. [2020-10-29 14:07:59,584 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 14:08:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:02,000 INFO L93 Difference]: Finished difference Result 113828 states and 183346 transitions. [2020-10-29 14:08:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:08:02,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-29 14:08:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:02,139 INFO L225 Difference]: With dead ends: 113828 [2020-10-29 14:08:02,140 INFO L226 Difference]: Without dead ends: 77381 [2020-10-29 14:08:02,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77381 states. [2020-10-29 14:08:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77381 to 77378. [2020-10-29 14:08:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77378 states. [2020-10-29 14:08:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77378 states to 77378 states and 124174 transitions. [2020-10-29 14:08:07,629 INFO L78 Accepts]: Start accepts. Automaton has 77378 states and 124174 transitions. Word has length 134 [2020-10-29 14:08:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:07,629 INFO L481 AbstractCegarLoop]: Abstraction has 77378 states and 124174 transitions. [2020-10-29 14:08:07,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:08:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 77378 states and 124174 transitions. [2020-10-29 14:08:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:08:07,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:07,701 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] [2020-10-29 14:08:07,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:08:07,702 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1644993067, now seen corresponding path program 1 times [2020-10-29 14:08:07,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:07,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483502813] [2020-10-29 14:08:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:12,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:08:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:13,721 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:13,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:13,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:13,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:13,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:08:13,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:13,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:13,790 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 14:08:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483502813] [2020-10-29 14:08:13,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:13,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:13,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442046375] [2020-10-29 14:08:13,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:13,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:13,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:13,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:13,792 INFO L87 Difference]: Start difference. First operand 77378 states and 124174 transitions. Second operand 5 states. [2020-10-29 14:08:20,130 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:08:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:23,892 INFO L93 Difference]: Finished difference Result 174580 states and 279479 transitions. [2020-10-29 14:08:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:23,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:08:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:24,201 INFO L225 Difference]: With dead ends: 174580 [2020-10-29 14:08:24,201 INFO L226 Difference]: Without dead ends: 100461 [2020-10-29 14:08:24,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:08:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100461 states. [2020-10-29 14:08:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100461 to 77786. [2020-10-29 14:08:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77786 states. [2020-10-29 14:08:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77786 states to 77786 states and 124867 transitions. [2020-10-29 14:08:30,468 INFO L78 Accepts]: Start accepts. Automaton has 77786 states and 124867 transitions. Word has length 134 [2020-10-29 14:08:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:30,468 INFO L481 AbstractCegarLoop]: Abstraction has 77786 states and 124867 transitions. [2020-10-29 14:08:30,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 77786 states and 124867 transitions. [2020-10-29 14:08:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:08:30,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:30,511 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] [2020-10-29 14:08:30,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:08:30,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 581821519, now seen corresponding path program 1 times [2020-10-29 14:08:30,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:30,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057933638] [2020-10-29 14:08:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:35,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 14:08:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:36,321 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:36,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:36,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:36,413 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 14:08:36,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057933638] [2020-10-29 14:08:36,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:36,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:36,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959641182] [2020-10-29 14:08:36,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:36,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:36,416 INFO L87 Difference]: Start difference. First operand 77786 states and 124867 transitions. Second operand 5 states. [2020-10-29 14:08:43,991 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:08:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:50,352 INFO L93 Difference]: Finished difference Result 225394 states and 361715 transitions. [2020-10-29 14:08:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:50,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:08:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:50,754 INFO L225 Difference]: With dead ends: 225394 [2020-10-29 14:08:50,755 INFO L226 Difference]: Without dead ends: 150363 [2020-10-29 14:08:50,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:08:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150363 states. [2020-10-29 14:09:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150363 to 150360. [2020-10-29 14:09:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150360 states. [2020-10-29 14:09:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150360 states to 150360 states and 239585 transitions. [2020-10-29 14:09:03,303 INFO L78 Accepts]: Start accepts. Automaton has 150360 states and 239585 transitions. Word has length 134 [2020-10-29 14:09:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:03,303 INFO L481 AbstractCegarLoop]: Abstraction has 150360 states and 239585 transitions. [2020-10-29 14:09:03,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 150360 states and 239585 transitions. [2020-10-29 14:09:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 14:09:03,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:03,421 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] [2020-10-29 14:09:03,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:09:03,421 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:03,422 INFO L82 PathProgramCache]: Analyzing trace with hash 885345243, now seen corresponding path program 1 times [2020-10-29 14:09:03,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:03,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660018151] [2020-10-29 14:09:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:08,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 14:09:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:09,230 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:09:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:09,299 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 14:09:09,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660018151] [2020-10-29 14:09:09,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:09,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:09,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031528537] [2020-10-29 14:09:09,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:09,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:09,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:09,301 INFO L87 Difference]: Start difference. First operand 150360 states and 239585 transitions. Second operand 5 states. [2020-10-29 14:09:20,721 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:09:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:34,445 INFO L93 Difference]: Finished difference Result 442410 states and 704617 transitions. [2020-10-29 14:09:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:34,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-29 14:09:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:35,141 INFO L225 Difference]: With dead ends: 442410 [2020-10-29 14:09:35,141 INFO L226 Difference]: Without dead ends: 292743 [2020-10-29 14:09:35,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292743 states.