/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:25:16,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:25:16,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:25:16,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:25:16,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:25:16,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:25:16,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:25:16,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:25:16,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:25:16,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:25:16,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:25:16,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:25:16,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:25:16,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:25:16,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:25:16,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:25:16,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:25:16,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:25:16,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:25:16,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:25:16,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:25:16,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:25:16,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:25:16,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:25:16,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:25:16,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:25:16,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:25:16,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:25:16,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:25:16,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:25:16,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:25:16,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:25:16,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:25:16,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:25:16,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:25:16,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:25:16,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:25:16,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:25:16,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:25:16,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:25:16,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:25:16,228 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 [2020-10-28 18:25:16,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:25:16,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:25:16,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:25:16,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:25:16,283 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:25:16,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:25:16,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:25:16,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:25:16,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:25:16,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:25:16,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:25:16,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:25:16,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:25:16,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:25:16,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:25:16,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:25:16,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:25:16,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:25:16,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:25:16,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:25:16,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:25:16,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:25:16,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:25:16,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:25:16,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:25:16,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:25:16,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:25:16,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:25:16,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:25:16,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:25:16,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:25:16,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:25:16,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:25:16,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:25:16,728 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:25:16,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:16,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352f4f8d2/583e28a80e8a4e93a840fdee0f7b70f8/FLAG16b485d03 [2020-10-28 18:25:17,740 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:25:17,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:17,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352f4f8d2/583e28a80e8a4e93a840fdee0f7b70f8/FLAG16b485d03 [2020-10-28 18:25:17,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352f4f8d2/583e28a80e8a4e93a840fdee0f7b70f8 [2020-10-28 18:25:17,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:25:17,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:25:17,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:25:17,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:25:17,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:25:17,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:25:17" (1/1) ... [2020-10-28 18:25:17,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4c458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:17, skipping insertion in model container [2020-10-28 18:25:17,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:25:17" (1/1) ... [2020-10-28 18:25:17,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:25:18,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:25:19,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:25:19,168 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:25:19,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:25:19,754 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:25:19,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19 WrapperNode [2020-10-28 18:25:19,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:25:19,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:25:19,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:25:19,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:25:19,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (1/1) ... [2020-10-28 18:25:19,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:25:19,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:25:19,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:25:19,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:25:19,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (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 [2020-10-28 18:25:20,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:25:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:25:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:25:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:25:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:25:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:25:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:25:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:25:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:25:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:25:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:25:20,073 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:25:20,073 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:25:20,073 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:25:20,073 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:25:20,073 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:25:20,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:25:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:25:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:25:24,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:25:24,800 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:25:24,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:25:24 BoogieIcfgContainer [2020-10-28 18:25:24,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:25:24,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:25:24,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:25:24,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:25:24,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:25:17" (1/3) ... [2020-10-28 18:25:24,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b367661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:25:24, skipping insertion in model container [2020-10-28 18:25:24,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:19" (2/3) ... [2020-10-28 18:25:24,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b367661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:25:24, skipping insertion in model container [2020-10-28 18:25:24,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:25:24" (3/3) ... [2020-10-28 18:25:24,818 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:24,832 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:25:24,838 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:25:24,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:25:24,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:25:24,901 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:25:24,902 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:25:24,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:25:24,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:25:24,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:25:24,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:25:24,902 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:25:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states. [2020-10-28 18:25:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 18:25:25,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:25,010 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] [2020-10-28 18:25:25,010 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:25,020 INFO L82 PathProgramCache]: Analyzing trace with hash -150030411, now seen corresponding path program 1 times [2020-10-28 18:25:25,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:25,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131662832] [2020-10-28 18:25:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:30,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-28 18:25:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:25:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-28 18:25:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:30,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 18:25:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:25:32,557 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:25:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:32,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 18:25:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:32,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:25:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:25:33,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131662832] [2020-10-28 18:25:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:33,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:33,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902731418] [2020-10-28 18:25:33,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:33,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:33,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:33,060 INFO L87 Difference]: Start difference. First operand 1443 states. Second operand 5 states. [2020-10-28 18:25:48,902 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:25:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:25:52,119 INFO L93 Difference]: Finished difference Result 4228 states and 7535 transitions. [2020-10-28 18:25:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:25:52,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2020-10-28 18:25:52,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:25:52,168 INFO L225 Difference]: With dead ends: 4228 [2020-10-28 18:25:52,169 INFO L226 Difference]: Without dead ends: 2834 [2020-10-28 18:25:52,184 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 [2020-10-28 18:25:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-10-28 18:25:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2831. [2020-10-28 18:25:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-10-28 18:25:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4761 transitions. [2020-10-28 18:25:52,452 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4761 transitions. Word has length 357 [2020-10-28 18:25:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:25:52,454 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 4761 transitions. [2020-10-28 18:25:52,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:25:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4761 transitions. [2020-10-28 18:25:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-28 18:25:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:52,468 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] [2020-10-28 18:25:52,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:25:52,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1782717398, now seen corresponding path program 1 times [2020-10-28 18:25:52,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:52,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808699274] [2020-10-28 18:25:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:57,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:57,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-28 18:25:57,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:25:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 18:25:57,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:57,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 18:25:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:25:59,198 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:25:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:59,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:59,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:59,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:25:59,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:59,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:25:59,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808699274] [2020-10-28 18:25:59,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:59,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:59,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715680124] [2020-10-28 18:25:59,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:59,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:59,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:59,625 INFO L87 Difference]: Start difference. First operand 2831 states and 4761 transitions. Second operand 5 states. [2020-10-28 18:26:12,146 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:26:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:13,733 INFO L93 Difference]: Finished difference Result 8306 states and 13954 transitions. [2020-10-28 18:26:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:13,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 359 [2020-10-28 18:26:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:13,764 INFO L225 Difference]: With dead ends: 8306 [2020-10-28 18:26:13,765 INFO L226 Difference]: Without dead ends: 5548 [2020-10-28 18:26:13,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2020-10-28 18:26:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5545. [2020-10-28 18:26:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-10-28 18:26:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 9279 transitions. [2020-10-28 18:26:14,101 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 9279 transitions. Word has length 359 [2020-10-28 18:26:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:14,102 INFO L481 AbstractCegarLoop]: Abstraction has 5545 states and 9279 transitions. [2020-10-28 18:26:14,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:26:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 9279 transitions. [2020-10-28 18:26:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 18:26:14,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:14,121 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] [2020-10-28 18:26:14,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:26:14,121 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:14,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:14,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1753584440, now seen corresponding path program 1 times [2020-10-28 18:26:14,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:14,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462444724] [2020-10-28 18:26:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:19,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:19,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-28 18:26:19,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:26:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 18:26:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:20,658 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:26:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:26:21,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462444724] [2020-10-28 18:26:21,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:21,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:21,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72685952] [2020-10-28 18:26:21,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:21,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:21,147 INFO L87 Difference]: Start difference. First operand 5545 states and 9279 transitions. Second operand 5 states. [2020-10-28 18:26:36,547 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:26:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:39,271 INFO L93 Difference]: Finished difference Result 16067 states and 26822 transitions. [2020-10-28 18:26:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:39,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-28 18:26:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:39,325 INFO L225 Difference]: With dead ends: 16067 [2020-10-28 18:26:39,326 INFO L226 Difference]: Without dead ends: 10788 [2020-10-28 18:26:39,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2020-10-28 18:26:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10785. [2020-10-28 18:26:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10785 states. [2020-10-28 18:26:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10785 states to 10785 states and 17935 transitions. [2020-10-28 18:26:40,028 INFO L78 Accepts]: Start accepts. Automaton has 10785 states and 17935 transitions. Word has length 361 [2020-10-28 18:26:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:40,029 INFO L481 AbstractCegarLoop]: Abstraction has 10785 states and 17935 transitions. [2020-10-28 18:26:40,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:26:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10785 states and 17935 transitions. [2020-10-28 18:26:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 18:26:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:40,093 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] [2020-10-28 18:26:40,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:26:40,094 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1164069267, now seen corresponding path program 1 times [2020-10-28 18:26:40,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:40,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836135872] [2020-10-28 18:26:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:44,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:45,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 18:26:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:26:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-28 18:26:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:45,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 18:26:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:46,786 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:26:46,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:46,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:46,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:46,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:26:46,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:46,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:26:47,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836135872] [2020-10-28 18:26:47,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:47,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:47,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392941241] [2020-10-28 18:26:47,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:47,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:47,201 INFO L87 Difference]: Start difference. First operand 10785 states and 17935 transitions. Second operand 5 states. [2020-10-28 18:27:04,478 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:27:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:27:07,962 INFO L93 Difference]: Finished difference Result 31277 states and 51889 transitions. [2020-10-28 18:27:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:27:07,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-28 18:27:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:27:08,040 INFO L225 Difference]: With dead ends: 31277 [2020-10-28 18:27:08,040 INFO L226 Difference]: Without dead ends: 21175 [2020-10-28 18:27:08,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:27:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2020-10-28 18:27:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 21172. [2020-10-28 18:27:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21172 states. [2020-10-28 18:27:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21172 states to 21172 states and 35053 transitions. [2020-10-28 18:27:09,854 INFO L78 Accepts]: Start accepts. Automaton has 21172 states and 35053 transitions. Word has length 363 [2020-10-28 18:27:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:27:09,855 INFO L481 AbstractCegarLoop]: Abstraction has 21172 states and 35053 transitions. [2020-10-28 18:27:09,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:27:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21172 states and 35053 transitions. [2020-10-28 18:27:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 18:27:09,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:27:09,905 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] [2020-10-28 18:27:09,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:27:09,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:27:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:27:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1240519113, now seen corresponding path program 1 times [2020-10-28 18:27:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:27:09,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137909456] [2020-10-28 18:27:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:27:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:13,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:27:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:27:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-28 18:27:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:27:16,406 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:27:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:27:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:27:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:27:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:27:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:27:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:27:16,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137909456] [2020-10-28 18:27:16,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:27:16,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:27:16,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029600110] [2020-10-28 18:27:16,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:27:16,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:27:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:27:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:27:16,723 INFO L87 Difference]: Start difference. First operand 21172 states and 35053 transitions. Second operand 5 states. [2020-10-28 18:27:33,108 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:27:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:27:36,333 INFO L93 Difference]: Finished difference Result 62101 states and 102682 transitions. [2020-10-28 18:27:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:27:36,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2020-10-28 18:27:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:27:36,426 INFO L225 Difference]: With dead ends: 62101 [2020-10-28 18:27:36,427 INFO L226 Difference]: Without dead ends: 41575 [2020-10-28 18:27:36,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:27:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41575 states. [2020-10-28 18:27:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41575 to 41572. [2020-10-28 18:27:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41572 states. [2020-10-28 18:27:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41572 states to 41572 states and 68456 transitions. [2020-10-28 18:27:39,278 INFO L78 Accepts]: Start accepts. Automaton has 41572 states and 68456 transitions. Word has length 366 [2020-10-28 18:27:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:27:39,278 INFO L481 AbstractCegarLoop]: Abstraction has 41572 states and 68456 transitions. [2020-10-28 18:27:39,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:27:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 41572 states and 68456 transitions. [2020-10-28 18:27:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 18:27:39,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:27:39,373 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] [2020-10-28 18:27:39,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:27:39,374 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:27:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:27:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1302660423, now seen corresponding path program 1 times [2020-10-28 18:27:39,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:27:39,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283883251] [2020-10-28 18:27:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:27:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:44,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 18:27:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:27:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 18:27:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:44,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:27:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:27:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 18:27:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:27:45,879 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:27:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:27:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:27:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:27:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:27:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:27:46,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283883251] [2020-10-28 18:27:46,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:27:46,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:27:46,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834630156] [2020-10-28 18:27:46,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:27:46,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:27:46,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:27:46,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:27:46,152 INFO L87 Difference]: Start difference. First operand 41572 states and 68456 transitions. Second operand 5 states. [2020-10-28 18:28:06,982 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:28:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:28:11,111 INFO L93 Difference]: Finished difference Result 122041 states and 200789 transitions. [2020-10-28 18:28:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:28:11,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 369 [2020-10-28 18:28:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:28:11,284 INFO L225 Difference]: With dead ends: 122041 [2020-10-28 18:28:11,284 INFO L226 Difference]: Without dead ends: 82246 [2020-10-28 18:28:11,356 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 [2020-10-28 18:28:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82246 states. [2020-10-28 18:28:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82246 to 82243. [2020-10-28 18:28:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82243 states. [2020-10-28 18:28:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82243 states to 82243 states and 134873 transitions. [2020-10-28 18:28:17,770 INFO L78 Accepts]: Start accepts. Automaton has 82243 states and 134873 transitions. Word has length 369 [2020-10-28 18:28:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:28:17,770 INFO L481 AbstractCegarLoop]: Abstraction has 82243 states and 134873 transitions. [2020-10-28 18:28:17,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:28:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 82243 states and 134873 transitions. [2020-10-28 18:28:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 18:28:17,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:28:17,866 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] [2020-10-28 18:28:17,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:28:17,866 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:28:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:28:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash 837352489, now seen corresponding path program 1 times [2020-10-28 18:28:17,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:28:17,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713229404] [2020-10-28 18:28:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:28:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:28:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:23,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:28:23,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 18:28:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-28 18:28:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:28:24,639 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:28:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:28:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:28:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:28:24,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:28:24,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:28:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:28:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:28:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:28:24,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713229404] [2020-10-28 18:28:24,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:28:24,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:28:24,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367024431] [2020-10-28 18:28:24,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:28:24,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:28:24,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:28:24,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:28:24,976 INFO L87 Difference]: Start difference. First operand 82243 states and 134873 transitions. Second operand 5 states. [2020-10-28 18:28:47,851 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:28:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:28:51,243 INFO L93 Difference]: Finished difference Result 244933 states and 401719 transitions. [2020-10-28 18:28:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:28:51,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 371 [2020-10-28 18:28:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:28:51,815 INFO L225 Difference]: With dead ends: 244933 [2020-10-28 18:28:51,815 INFO L226 Difference]: Without dead ends: 162709 [2020-10-28 18:28:51,914 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 [2020-10-28 18:28:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162709 states.