/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=DEEPEST --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_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:33:19,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:33:19,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:33:19,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:33:19,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:33:19,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:33:19,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:33:19,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:33:19,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:33:19,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:33:19,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:33:19,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:33:19,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:33:19,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:33:19,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:33:19,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:33:19,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:33:19,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:33:19,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:33:19,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:33:19,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:33:19,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:33:19,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:33:19,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:33:19,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:33:19,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:33:19,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:33:19,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:33:19,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:33:19,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:33:19,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:33:19,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:33:19,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:33:19,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:33:19,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:33:19,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:33:19,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:33:19,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:33:19,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:33:19,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:33:19,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:33:19,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:33:19,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:33:19,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:33:19,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:33:19,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:33:19,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:33:19,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:33:19,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:33:19,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:33:19,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:33:19,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:33:19,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:33:19,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:33:19,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:33:19,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:33:19,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:33:19,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:33:19,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:33:19,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:33:19,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:33:19,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:33:19,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:33:19,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:19,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:33:19,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:33:19,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:33:19,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:33:19,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:33:19,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:33:19,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:33:19,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:33:20,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:33:20,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:33:20,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:33:20,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:33:20,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:33:20,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:33:20,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87eaea87/5094264afa5a4a5b922da5c8a23688b6/FLAG69c2c1e7d [2020-10-27 23:33:21,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:33:21,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:33:21,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87eaea87/5094264afa5a4a5b922da5c8a23688b6/FLAG69c2c1e7d [2020-10-27 23:33:21,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87eaea87/5094264afa5a4a5b922da5c8a23688b6 [2020-10-27 23:33:21,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:33:21,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:33:21,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:21,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:33:21,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:33:21,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:21" (1/1) ... [2020-10-27 23:33:21,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d2feda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:21, skipping insertion in model container [2020-10-27 23:33:21,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:21" (1/1) ... [2020-10-27 23:33:21,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:33:21,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:33:22,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:22,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:33:22,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:22,886 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:33:22,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22 WrapperNode [2020-10-27 23:33:22,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:22,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:33:22,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:33:22,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:33:22,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:22,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:22,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:22,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:22,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:23,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:23,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... [2020-10-27 23:33:23,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:33:23,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:33:23,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:33:23,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:33:23,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:33:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:33:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:33:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:33:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:33:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:33:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:33:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:33:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:33:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:33:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:33:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:33:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:33:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:33:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:33:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:33:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:33:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:33:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:33:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:33:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:33:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:33:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:33:26,590 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:33:26,590 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:33:26,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:26 BoogieIcfgContainer [2020-10-27 23:33:26,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:33:26,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:33:26,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:33:26,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:33:26,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:33:21" (1/3) ... [2020-10-27 23:33:26,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb050f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:26, skipping insertion in model container [2020-10-27 23:33:26,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:22" (2/3) ... [2020-10-27 23:33:26,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb050f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:26, skipping insertion in model container [2020-10-27 23:33:26,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:26" (3/3) ... [2020-10-27 23:33:26,603 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:33:26,615 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:33:26,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:33:26,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:33:26,668 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:33:26,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:33:26,668 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:33:26,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:33:26,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:33:26,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:33:26,669 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:33:26,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:33:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states. [2020-10-27 23:33:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:33:26,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:26,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:26,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2113566534, now seen corresponding path program 1 times [2020-10-27 23:33:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:26,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367818535] [2020-10-27 23:33:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:28,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:32,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:32,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:33:32,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:33:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:33:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:33:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:33:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 23:33:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:33:34,674 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:33:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:33:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:33:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:35,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367818535] [2020-10-27 23:33:35,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:35,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:33:35,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516521323] [2020-10-27 23:33:35,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:33:35,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:33:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:33:35,077 INFO L87 Difference]: Start difference. First operand 712 states. Second operand 5 states. [2020-10-27 23:33:45,284 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 23:33:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:33:47,577 INFO L93 Difference]: Finished difference Result 2081 states and 3715 transitions. [2020-10-27 23:33:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:33:47,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 23:33:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:33:47,644 INFO L225 Difference]: With dead ends: 2081 [2020-10-27 23:33:47,645 INFO L226 Difference]: Without dead ends: 1378 [2020-10-27 23:33:47,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:33:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-10-27 23:33:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1375. [2020-10-27 23:33:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-27 23:33:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2123 transitions. [2020-10-27 23:33:47,815 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2123 transitions. Word has length 305 [2020-10-27 23:33:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:33:47,816 INFO L481 AbstractCegarLoop]: Abstraction has 1375 states and 2123 transitions. [2020-10-27 23:33:47,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:33:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2123 transitions. [2020-10-27 23:33:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 23:33:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:47,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:47,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:33:47,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1421113193, now seen corresponding path program 1 times [2020-10-27 23:33:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:47,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719314204] [2020-10-27 23:33:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 23:33:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:33:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 23:33:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:33:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:33:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 23:33:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:54,400 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:33:54,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:54,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:54,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:54,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:54,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:33:54,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:54,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:54,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719314204] [2020-10-27 23:33:54,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:54,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:33:54,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916841932] [2020-10-27 23:33:54,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:33:54,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:33:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:33:54,634 INFO L87 Difference]: Start difference. First operand 1375 states and 2123 transitions. Second operand 4 states. [2020-10-27 23:34:04,192 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:34:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:06,343 INFO L93 Difference]: Finished difference Result 3935 states and 6047 transitions. [2020-10-27 23:34:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:06,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 307 [2020-10-27 23:34:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:06,359 INFO L225 Difference]: With dead ends: 3935 [2020-10-27 23:34:06,359 INFO L226 Difference]: Without dead ends: 2662 [2020-10-27 23:34:06,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2020-10-27 23:34:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2659. [2020-10-27 23:34:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2020-10-27 23:34:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 4078 transitions. [2020-10-27 23:34:06,492 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 4078 transitions. Word has length 307 [2020-10-27 23:34:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:06,493 INFO L481 AbstractCegarLoop]: Abstraction has 2659 states and 4078 transitions. [2020-10-27 23:34:06,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 4078 transitions. [2020-10-27 23:34:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 23:34:06,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:06,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:06,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:34:06,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1233027708, now seen corresponding path program 1 times [2020-10-27 23:34:06,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:06,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859094034] [2020-10-27 23:34:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 23:34:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:34:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:34:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:34:12,938 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:34:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:12,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:12,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:34:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:13,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859094034] [2020-10-27 23:34:13,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:13,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:13,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084455533] [2020-10-27 23:34:13,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:13,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:13,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:13,107 INFO L87 Difference]: Start difference. First operand 2659 states and 4078 transitions. Second operand 4 states. [2020-10-27 23:34:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:18,965 INFO L93 Difference]: Finished difference Result 7943 states and 12184 transitions. [2020-10-27 23:34:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:34:18,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 307 [2020-10-27 23:34:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:18,992 INFO L225 Difference]: With dead ends: 7943 [2020-10-27 23:34:18,993 INFO L226 Difference]: Without dead ends: 5299 [2020-10-27 23:34:18,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2020-10-27 23:34:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 2670. [2020-10-27 23:34:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-10-27 23:34:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4094 transitions. [2020-10-27 23:34:19,163 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4094 transitions. Word has length 307 [2020-10-27 23:34:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:19,164 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 4094 transitions. [2020-10-27 23:34:19,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4094 transitions. [2020-10-27 23:34:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 23:34:19,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:19,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:19,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:34:19,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:19,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1051885485, now seen corresponding path program 1 times [2020-10-27 23:34:19,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:19,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244522132] [2020-10-27 23:34:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:24,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 23:34:24,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 23:34:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:25,746 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:34:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:25,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:25,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:25,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:25,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244522132] [2020-10-27 23:34:25,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:25,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:25,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873873106] [2020-10-27 23:34:25,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:25,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:25,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:25,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:25,935 INFO L87 Difference]: Start difference. First operand 2670 states and 4094 transitions. Second operand 4 states. [2020-10-27 23:34:36,194 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:34:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:38,508 INFO L93 Difference]: Finished difference Result 7650 states and 11672 transitions. [2020-10-27 23:34:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:38,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-10-27 23:34:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:38,535 INFO L225 Difference]: With dead ends: 7650 [2020-10-27 23:34:38,535 INFO L226 Difference]: Without dead ends: 5165 [2020-10-27 23:34:38,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2020-10-27 23:34:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5162. [2020-10-27 23:34:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5162 states. [2020-10-27 23:34:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 7857 transitions. [2020-10-27 23:34:38,809 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 7857 transitions. Word has length 308 [2020-10-27 23:34:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:38,811 INFO L481 AbstractCegarLoop]: Abstraction has 5162 states and 7857 transitions. [2020-10-27 23:34:38,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 7857 transitions. [2020-10-27 23:34:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 23:34:38,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:38,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:38,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:34:38,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1919810026, now seen corresponding path program 1 times [2020-10-27 23:34:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:38,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517638736] [2020-10-27 23:34:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:43,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:34:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:34:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:45,473 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:34:45,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:45,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:45,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:34:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:45,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517638736] [2020-10-27 23:34:45,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:45,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:45,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097136102] [2020-10-27 23:34:45,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:45,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:45,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:45,631 INFO L87 Difference]: Start difference. First operand 5162 states and 7857 transitions. Second operand 5 states. [2020-10-27 23:34:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:54,324 INFO L93 Difference]: Finished difference Result 14208 states and 21448 transitions. [2020-10-27 23:34:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:54,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-27 23:34:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:54,371 INFO L225 Difference]: With dead ends: 14208 [2020-10-27 23:34:54,371 INFO L226 Difference]: Without dead ends: 9482 [2020-10-27 23:34:54,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:34:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2020-10-27 23:34:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 5376. [2020-10-27 23:34:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5376 states. [2020-10-27 23:34:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 8221 transitions. [2020-10-27 23:34:54,719 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 8221 transitions. Word has length 308 [2020-10-27 23:34:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:54,719 INFO L481 AbstractCegarLoop]: Abstraction has 5376 states and 8221 transitions. [2020-10-27 23:34:54,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 8221 transitions. [2020-10-27 23:34:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 23:34:54,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:54,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:54,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:34:54,735 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:54,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1278370824, now seen corresponding path program 1 times [2020-10-27 23:34:54,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:54,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118014465] [2020-10-27 23:34:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 23:34:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:34:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:01,188 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:35:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:35:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:01,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118014465] [2020-10-27 23:35:01,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:01,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:01,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574036741] [2020-10-27 23:35:01,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:01,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:01,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:01,333 INFO L87 Difference]: Start difference. First operand 5376 states and 8221 transitions. Second operand 4 states. [2020-10-27 23:35:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:07,458 INFO L93 Difference]: Finished difference Result 14854 states and 22394 transitions. [2020-10-27 23:35:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:35:07,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-27 23:35:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:07,483 INFO L225 Difference]: With dead ends: 14854 [2020-10-27 23:35:07,484 INFO L226 Difference]: Without dead ends: 10110 [2020-10-27 23:35:07,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2020-10-27 23:35:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5473. [2020-10-27 23:35:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2020-10-27 23:35:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 8351 transitions. [2020-10-27 23:35:07,877 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 8351 transitions. Word has length 310 [2020-10-27 23:35:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:07,877 INFO L481 AbstractCegarLoop]: Abstraction has 5473 states and 8351 transitions. [2020-10-27 23:35:07,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 8351 transitions. [2020-10-27 23:35:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 23:35:07,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:07,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:07,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:35:07,892 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash 285142970, now seen corresponding path program 1 times [2020-10-27 23:35:07,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:07,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565180408] [2020-10-27 23:35:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:12,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 23:35:12,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:35:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:35:12,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:35:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:35:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:14,395 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:35:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:14,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565180408] [2020-10-27 23:35:14,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:14,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:14,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408594080] [2020-10-27 23:35:14,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:14,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:14,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:14,489 INFO L87 Difference]: Start difference. First operand 5473 states and 8351 transitions. Second operand 5 states. [2020-10-27 23:35:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:20,819 INFO L93 Difference]: Finished difference Result 9557 states and 14436 transitions. [2020-10-27 23:35:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:20,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 23:35:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:20,831 INFO L225 Difference]: With dead ends: 9557 [2020-10-27 23:35:20,831 INFO L226 Difference]: Without dead ends: 4922 [2020-10-27 23:35:20,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:35:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2020-10-27 23:35:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4866. [2020-10-27 23:35:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4866 states. [2020-10-27 23:35:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 7431 transitions. [2020-10-27 23:35:21,136 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 7431 transitions. Word has length 311 [2020-10-27 23:35:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:21,137 INFO L481 AbstractCegarLoop]: Abstraction has 4866 states and 7431 transitions. [2020-10-27 23:35:21,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 7431 transitions. [2020-10-27 23:35:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 23:35:21,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:21,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:21,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:35:21,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash 474925399, now seen corresponding path program 1 times [2020-10-27 23:35:21,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:21,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961861407] [2020-10-27 23:35:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:26,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 23:35:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-27 23:35:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:27,755 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:35:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:27,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961861407] [2020-10-27 23:35:27,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:27,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:27,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188507712] [2020-10-27 23:35:27,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:27,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:27,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:27,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:27,924 INFO L87 Difference]: Start difference. First operand 4866 states and 7431 transitions. Second operand 5 states. [2020-10-27 23:35:29,409 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 302 [2020-10-27 23:35:37,279 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 303 [2020-10-27 23:35:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:39,855 INFO L93 Difference]: Finished difference Result 10615 states and 16283 transitions. [2020-10-27 23:35:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:39,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-27 23:35:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:39,875 INFO L225 Difference]: With dead ends: 10615 [2020-10-27 23:35:39,876 INFO L226 Difference]: Without dead ends: 9677 [2020-10-27 23:35:39,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:35:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9677 states. [2020-10-27 23:35:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9677 to 9671. [2020-10-27 23:35:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9671 states. [2020-10-27 23:35:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9671 states to 9671 states and 14693 transitions. [2020-10-27 23:35:40,464 INFO L78 Accepts]: Start accepts. Automaton has 9671 states and 14693 transitions. Word has length 314 [2020-10-27 23:35:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:40,465 INFO L481 AbstractCegarLoop]: Abstraction has 9671 states and 14693 transitions. [2020-10-27 23:35:40,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9671 states and 14693 transitions. [2020-10-27 23:35:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 23:35:40,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:40,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:40,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:35:40,486 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1922961011, now seen corresponding path program 1 times [2020-10-27 23:35:40,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:40,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334293641] [2020-10-27 23:35:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:45,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 23:35:45,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:35:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:35:45,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:35:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 23:35:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:47,115 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:35:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:47,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:47,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:47,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334293641] [2020-10-27 23:35:47,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:47,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:47,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097277947] [2020-10-27 23:35:47,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:47,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:47,393 INFO L87 Difference]: Start difference. First operand 9671 states and 14693 transitions. Second operand 5 states. [2020-10-27 23:35:56,612 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 23:35:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:59,307 INFO L93 Difference]: Finished difference Result 28122 states and 42539 transitions. [2020-10-27 23:35:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:35:59,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-27 23:35:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:59,344 INFO L225 Difference]: With dead ends: 28122 [2020-10-27 23:35:59,344 INFO L226 Difference]: Without dead ends: 18754 [2020-10-27 23:35:59,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:35:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18754 states. [2020-10-27 23:36:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18754 to 18751. [2020-10-27 23:36:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18751 states. [2020-10-27 23:36:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18751 states to 18751 states and 28179 transitions. [2020-10-27 23:36:00,652 INFO L78 Accepts]: Start accepts. Automaton has 18751 states and 28179 transitions. Word has length 314 [2020-10-27 23:36:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:00,652 INFO L481 AbstractCegarLoop]: Abstraction has 18751 states and 28179 transitions. [2020-10-27 23:36:00,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18751 states and 28179 transitions. [2020-10-27 23:36:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-27 23:36:00,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:00,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:00,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:36:00,683 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1885208168, now seen corresponding path program 1 times [2020-10-27 23:36:00,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:00,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144734494] [2020-10-27 23:36:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:04,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:05,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:05,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 23:36:05,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:36:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:36:05,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 23:36:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 23:36:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:07,190 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:36:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:07,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:07,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144734494] [2020-10-27 23:36:07,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:07,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:07,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322095562] [2020-10-27 23:36:07,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:07,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:07,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:07,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:07,296 INFO L87 Difference]: Start difference. First operand 18751 states and 28179 transitions. Second operand 4 states. [2020-10-27 23:36:18,082 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:36:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:20,875 INFO L93 Difference]: Finished difference Result 54717 states and 81957 transitions. [2020-10-27 23:36:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:20,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-27 23:36:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:20,933 INFO L225 Difference]: With dead ends: 54717 [2020-10-27 23:36:20,933 INFO L226 Difference]: Without dead ends: 36655 [2020-10-27 23:36:20,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36655 states. [2020-10-27 23:36:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36655 to 36652. [2020-10-27 23:36:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36652 states. [2020-10-27 23:36:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36652 states to 36652 states and 54676 transitions. [2020-10-27 23:36:23,344 INFO L78 Accepts]: Start accepts. Automaton has 36652 states and 54676 transitions. Word has length 316 [2020-10-27 23:36:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:23,345 INFO L481 AbstractCegarLoop]: Abstraction has 36652 states and 54676 transitions. [2020-10-27 23:36:23,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 36652 states and 54676 transitions. [2020-10-27 23:36:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-27 23:36:23,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:23,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:23,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:36:23,382 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1358287837, now seen corresponding path program 1 times [2020-10-27 23:36:23,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:23,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728783190] [2020-10-27 23:36:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:28,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 23:36:28,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:36:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:29,976 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:36:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:30,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728783190] [2020-10-27 23:36:30,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:30,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:30,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447898161] [2020-10-27 23:36:30,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:30,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:30,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:30,119 INFO L87 Difference]: Start difference. First operand 36652 states and 54676 transitions. Second operand 5 states. [2020-10-27 23:36:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:44,161 INFO L93 Difference]: Finished difference Result 105440 states and 156455 transitions. [2020-10-27 23:36:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:44,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-27 23:36:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:44,241 INFO L225 Difference]: With dead ends: 105440 [2020-10-27 23:36:44,242 INFO L226 Difference]: Without dead ends: 72157 [2020-10-27 23:36:44,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:36:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72157 states. [2020-10-27 23:36:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72157 to 39296. [2020-10-27 23:36:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39296 states. [2020-10-27 23:36:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39296 states to 39296 states and 59026 transitions. [2020-10-27 23:36:47,150 INFO L78 Accepts]: Start accepts. Automaton has 39296 states and 59026 transitions. Word has length 316 [2020-10-27 23:36:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:47,150 INFO L481 AbstractCegarLoop]: Abstraction has 39296 states and 59026 transitions. [2020-10-27 23:36:47,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 39296 states and 59026 transitions. [2020-10-27 23:36:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 23:36:47,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:47,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:47,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:36:47,178 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash 412243470, now seen corresponding path program 1 times [2020-10-27 23:36:47,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:47,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269243295] [2020-10-27 23:36:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 23:36:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:53,672 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:36:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:53,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:53,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:53,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269243295] [2020-10-27 23:36:53,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:53,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:53,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721666644] [2020-10-27 23:36:53,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:53,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:53,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:53,788 INFO L87 Difference]: Start difference. First operand 39296 states and 59026 transitions. Second operand 4 states.