/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:11:20,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:11:20,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:11:20,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:11:20,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:11:20,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:11:20,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:11:20,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:11:20,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:11:20,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:11:20,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:11:20,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:11:20,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:11:20,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:11:20,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:11:20,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:11:20,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:11:20,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:11:20,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:11:20,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:11:20,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:11:20,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:11:20,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:11:20,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:11:20,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:11:20,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:11:20,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:11:20,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:11:20,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:11:20,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:11:20,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:11:20,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:11:20,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:11:20,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:11:20,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:11:20,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:11:20,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:11:20,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:11:20,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:11:20,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:11:20,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:11:20,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:11:20,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:11:20,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:11:20,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:11:20,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:11:20,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:11:20,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:11:20,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:11:20,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:11:20,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:11:20,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:11:20,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:11:20,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:11:20,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:11:20,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:11:20,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:11:20,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:11:20,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:11:20,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:11:20,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:11:20,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:11:20,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:11:20,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:11:20,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:11:20,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:11:20,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:11:21,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:11:21,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:11:21,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:11:21,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:11:21,263 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:11:21,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:11:21,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7040015/51bb6fe1f4d641e08085570bf8173961/FLAG9fd1b84c8 [2020-10-27 06:11:22,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:11:22,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:11:22,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7040015/51bb6fe1f4d641e08085570bf8173961/FLAG9fd1b84c8 [2020-10-27 06:11:22,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc7040015/51bb6fe1f4d641e08085570bf8173961 [2020-10-27 06:11:22,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:11:22,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:11:22,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:22,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:11:22,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:11:22,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:22" (1/1) ... [2020-10-27 06:11:22,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4e39d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:22, skipping insertion in model container [2020-10-27 06:11:22,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:22" (1/1) ... [2020-10-27 06:11:22,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:11:23,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:11:24,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:24,118 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:11:24,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:24,856 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:11:24,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24 WrapperNode [2020-10-27 06:11:24,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:24,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:11:24,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:11:24,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:11:24,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:24,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:24,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:24,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:25,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:25,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:25,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... [2020-10-27 06:11:25,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:11:25,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:11:25,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:11:25,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:11:25,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:11:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:11:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:11:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:11:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:11:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:11:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:11:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:11:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:11:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:11:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:11:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:11:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:11:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:11:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:11:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:11:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:11:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:11:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:11:29,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:11:29,958 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:11:29,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:29 BoogieIcfgContainer [2020-10-27 06:11:29,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:11:29,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:11:29,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:11:29,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:11:29,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:11:22" (1/3) ... [2020-10-27 06:11:29,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16205d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:29, skipping insertion in model container [2020-10-27 06:11:29,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:24" (2/3) ... [2020-10-27 06:11:29,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16205d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:29, skipping insertion in model container [2020-10-27 06:11:29,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:29" (3/3) ... [2020-10-27 06:11:29,976 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:11:29,989 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:11:29,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:11:30,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:11:30,050 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:11:30,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:11:30,051 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:11:30,051 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:11:30,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:11:30,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:11:30,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:11:30,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:11:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states. [2020-10-27 06:11:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-27 06:11:30,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:30,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:30,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1333769062, now seen corresponding path program 1 times [2020-10-27 06:11:30,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:30,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841287077] [2020-10-27 06:11:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:35,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-27 06:11:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:11:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 06:11:35,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 06:11:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 06:11:36,651 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-10-27 06:11:37,789 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:11:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:37,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:37,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:11:37,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:38,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841287077] [2020-10-27 06:11:38,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:38,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:38,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063949498] [2020-10-27 06:11:38,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:38,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:38,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:38,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:38,519 INFO L87 Difference]: Start difference. First operand 1553 states. Second operand 5 states. [2020-10-27 06:11:54,228 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:11:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:56,179 INFO L93 Difference]: Finished difference Result 4553 states and 8086 transitions. [2020-10-27 06:11:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:11:56,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-27 06:11:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:56,229 INFO L225 Difference]: With dead ends: 4553 [2020-10-27 06:11:56,229 INFO L226 Difference]: Without dead ends: 3049 [2020-10-27 06:11:56,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2020-10-27 06:11:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3046. [2020-10-27 06:11:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3046 states. [2020-10-27 06:11:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 5115 transitions. [2020-10-27 06:11:56,568 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 5115 transitions. Word has length 397 [2020-10-27 06:11:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:56,574 INFO L481 AbstractCegarLoop]: Abstraction has 3046 states and 5115 transitions. [2020-10-27 06:11:56,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 5115 transitions. [2020-10-27 06:11:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-27 06:11:56,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:56,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:56,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:11:56,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:56,593 INFO L82 PathProgramCache]: Analyzing trace with hash -224204706, now seen corresponding path program 1 times [2020-10-27 06:11:56,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:56,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310057794] [2020-10-27 06:11:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:00,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-27 06:12:01,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:12:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-27 06:12:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-27 06:12:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:03,433 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:12:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:03,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:03,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:03,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:03,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:12:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:04,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310057794] [2020-10-27 06:12:04,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:04,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:04,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678849050] [2020-10-27 06:12:04,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:04,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:04,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:04,041 INFO L87 Difference]: Start difference. First operand 3046 states and 5115 transitions. Second operand 5 states. [2020-10-27 06:12:18,375 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:12:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:20,125 INFO L93 Difference]: Finished difference Result 8944 states and 15004 transitions. [2020-10-27 06:12:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:20,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-27 06:12:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:20,159 INFO L225 Difference]: With dead ends: 8944 [2020-10-27 06:12:20,159 INFO L226 Difference]: Without dead ends: 6015 [2020-10-27 06:12:20,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2020-10-27 06:12:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 6012. [2020-10-27 06:12:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6012 states. [2020-10-27 06:12:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10064 transitions. [2020-10-27 06:12:20,563 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10064 transitions. Word has length 397 [2020-10-27 06:12:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:20,565 INFO L481 AbstractCegarLoop]: Abstraction has 6012 states and 10064 transitions. [2020-10-27 06:12:20,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10064 transitions. [2020-10-27 06:12:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-27 06:12:20,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:20,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:12:20,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:12:20,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:20,587 INFO L82 PathProgramCache]: Analyzing trace with hash -556137862, now seen corresponding path program 1 times [2020-10-27 06:12:20,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:20,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33394356] [2020-10-27 06:12:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:25,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-27 06:12:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:12:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-27 06:12:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:12:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:27,361 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:12:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:27,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:27,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:27,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:12:27,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:27,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33394356] [2020-10-27 06:12:27,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:27,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:27,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823838568] [2020-10-27 06:12:27,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:27,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:27,771 INFO L87 Difference]: Start difference. First operand 6012 states and 10064 transitions. Second operand 5 states. [2020-10-27 06:12:47,579 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:12:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:50,711 INFO L93 Difference]: Finished difference Result 17514 states and 29254 transitions. [2020-10-27 06:12:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:50,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-27 06:12:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:50,773 INFO L225 Difference]: With dead ends: 17514 [2020-10-27 06:12:50,773 INFO L226 Difference]: Without dead ends: 11757 [2020-10-27 06:12:50,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11757 states. [2020-10-27 06:12:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11757 to 11754. [2020-10-27 06:12:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11754 states. [2020-10-27 06:12:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11754 states to 11754 states and 19584 transitions. [2020-10-27 06:12:51,887 INFO L78 Accepts]: Start accepts. Automaton has 11754 states and 19584 transitions. Word has length 397 [2020-10-27 06:12:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:51,888 INFO L481 AbstractCegarLoop]: Abstraction has 11754 states and 19584 transitions. [2020-10-27 06:12:51,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11754 states and 19584 transitions. [2020-10-27 06:12:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-27 06:12:51,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:51,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:12:51,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:12:51,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash -264668695, now seen corresponding path program 1 times [2020-10-27 06:12:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851960317] [2020-10-27 06:12:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:54,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:57,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:57,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 06:12:57,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:12:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 06:12:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-27 06:12:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:58,559 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:12:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 06:12:58,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:58,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851960317] [2020-10-27 06:12:58,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:58,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:58,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030169225] [2020-10-27 06:12:58,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:58,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:58,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:58,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:58,855 INFO L87 Difference]: Start difference. First operand 11754 states and 19584 transitions. Second operand 5 states. [2020-10-27 06:13:14,534 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:13:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:16,658 INFO L93 Difference]: Finished difference Result 34312 states and 57052 transitions. [2020-10-27 06:13:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:16,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-27 06:13:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:16,823 INFO L225 Difference]: With dead ends: 34312 [2020-10-27 06:13:16,824 INFO L226 Difference]: Without dead ends: 22925 [2020-10-27 06:13:16,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22925 states. [2020-10-27 06:13:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22925 to 22922. [2020-10-27 06:13:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22922 states. [2020-10-27 06:13:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22922 states to 22922 states and 37962 transitions. [2020-10-27 06:13:18,888 INFO L78 Accepts]: Start accepts. Automaton has 22922 states and 37962 transitions. Word has length 399 [2020-10-27 06:13:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:18,888 INFO L481 AbstractCegarLoop]: Abstraction has 22922 states and 37962 transitions. [2020-10-27 06:13:18,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 22922 states and 37962 transitions. [2020-10-27 06:13:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-27 06:13:18,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:18,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:18,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:13:18,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash -588928931, now seen corresponding path program 1 times [2020-10-27 06:13:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116993178] [2020-10-27 06:13:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:21,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:24,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:24,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-27 06:13:24,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 06:13:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:25,587 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:13:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:25,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:25,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:25,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:13:25,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:25,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116993178] [2020-10-27 06:13:26,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:26,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:26,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507490786] [2020-10-27 06:13:26,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:26,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:26,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:26,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:26,008 INFO L87 Difference]: Start difference. First operand 22922 states and 37962 transitions. Second operand 5 states. [2020-10-27 06:13:42,659 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:13:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:44,807 INFO L93 Difference]: Finished difference Result 67311 states and 111307 transitions. [2020-10-27 06:13:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:44,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 401 [2020-10-27 06:13:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:45,017 INFO L225 Difference]: With dead ends: 67311 [2020-10-27 06:13:45,017 INFO L226 Difference]: Without dead ends: 45296 [2020-10-27 06:13:45,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45296 states. [2020-10-27 06:13:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45296 to 45293. [2020-10-27 06:13:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45293 states. [2020-10-27 06:13:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45293 states to 45293 states and 74707 transitions. [2020-10-27 06:13:48,571 INFO L78 Accepts]: Start accepts. Automaton has 45293 states and 74707 transitions. Word has length 401 [2020-10-27 06:13:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:48,571 INFO L481 AbstractCegarLoop]: Abstraction has 45293 states and 74707 transitions. [2020-10-27 06:13:48,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 45293 states and 74707 transitions. [2020-10-27 06:13:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-27 06:13:48,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:48,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:48,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:13:48,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash 77475977, now seen corresponding path program 1 times [2020-10-27 06:13:48,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:48,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269841133] [2020-10-27 06:13:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-27 06:13:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:55,320 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:13:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:55,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:55,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269841133] [2020-10-27 06:13:55,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:55,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:55,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674658657] [2020-10-27 06:13:55,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:55,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:55,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:55,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:55,605 INFO L87 Difference]: Start difference. First operand 45293 states and 74707 transitions. Second operand 5 states. [2020-10-27 06:14:16,917 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-27 06:14:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:14:19,824 INFO L93 Difference]: Finished difference Result 133073 states and 219223 transitions. [2020-10-27 06:14:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:14:19,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 401 [2020-10-27 06:14:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:14:20,071 INFO L225 Difference]: With dead ends: 133073 [2020-10-27 06:14:20,071 INFO L226 Difference]: Without dead ends: 89126 [2020-10-27 06:14:20,142 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 06:14:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89126 states. [2020-10-27 06:14:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89126 to 89123. [2020-10-27 06:14:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89123 states. [2020-10-27 06:14:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89123 states to 89123 states and 146339 transitions. [2020-10-27 06:14:27,953 INFO L78 Accepts]: Start accepts. Automaton has 89123 states and 146339 transitions. Word has length 401 [2020-10-27 06:14:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:14:27,954 INFO L481 AbstractCegarLoop]: Abstraction has 89123 states and 146339 transitions. [2020-10-27 06:14:27,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:14:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 89123 states and 146339 transitions. [2020-10-27 06:14:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-27 06:14:28,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:14:28,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:14:28,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:14:28,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:14:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:14:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1106891693, now seen corresponding path program 1 times [2020-10-27 06:14:28,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:14:28,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515530846] [2020-10-27 06:14:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:14:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:33,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:33,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-27 06:14:33,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:14:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 06:14:33,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:14:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:14:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-27 06:14:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:34,971 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-27 06:14:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:14:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:14:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:14:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:14:35,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:14:35,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515530846] [2020-10-27 06:14:35,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:14:35,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:14:35,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618234683] [2020-10-27 06:14:35,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:14:35,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:14:35,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:14:35,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:14:35,258 INFO L87 Difference]: Start difference. First operand 89123 states and 146339 transitions. Second operand 5 states.