/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.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:07:12,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:07:12,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:07:12,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:07:12,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:07:12,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:07:12,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:07:12,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:07:12,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:07:12,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:07:12,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:07:12,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:07:12,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:07:12,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:07:12,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:07:12,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:07:12,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:07:12,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:07:12,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:07:12,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:07:12,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:07:12,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:07:12,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:07:12,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:07:12,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:07:12,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:07:12,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:07:12,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:07:12,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:07:12,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:07:12,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:07:12,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:07:12,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:07:12,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:07:12,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:07:12,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:07:12,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:07:12,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:07:12,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:07:12,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:07:12,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:07:12,318 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 06:07:12,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:07:12,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:07:12,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:07:12,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:07:12,371 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:07:12,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:07:12,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:07:12,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:07:12,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:07:12,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:07:12,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:07:12,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:07:12,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:07:12,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:07:12,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:07:12,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:07:12,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:07:12,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:07:12,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:07:12,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:07:12,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:07:12,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:07:12,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:07:12,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:07:12,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:07:12,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:07:12,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:07:12,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:07:12,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:07:12,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:07:12,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:07:12,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:07:12,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:07:12,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:07:12,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:07:12,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:07:12,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70792aa53/1afad1018902407e99880583b362aa82/FLAGdb6b608d1 [2020-10-27 06:07:13,531 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:07:13,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:07:13,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70792aa53/1afad1018902407e99880583b362aa82/FLAGdb6b608d1 [2020-10-27 06:07:13,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70792aa53/1afad1018902407e99880583b362aa82 [2020-10-27 06:07:13,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:07:13,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:07:13,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:13,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:07:13,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:07:13,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:13" (1/1) ... [2020-10-27 06:07:13,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edfab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:13, skipping insertion in model container [2020-10-27 06:07:13,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:13" (1/1) ... [2020-10-27 06:07:13,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:07:13,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:07:14,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:14,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:07:14,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:14,675 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:07:14,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14 WrapperNode [2020-10-27 06:07:14,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:14,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:07:14,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:07:14,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:07:14,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (1/1) ... [2020-10-27 06:07:14,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:07:14,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:07:14,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:07:14,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:07:14,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (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 06:07:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:07:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:07:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:07:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:07:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:07:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:07:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:07:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:07:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:07:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:07:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:07:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:07:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:07:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:07:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:07:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:07:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:07:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:07:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:07:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:07:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:07:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:07:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:07:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:07:16,706 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:07:16,706 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:07:16,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:16 BoogieIcfgContainer [2020-10-27 06:07:16,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:07:16,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:07:16,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:07:16,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:07:16,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:07:13" (1/3) ... [2020-10-27 06:07:16,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610cf1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:16, skipping insertion in model container [2020-10-27 06:07:16,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:14" (2/3) ... [2020-10-27 06:07:16,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610cf1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:16, skipping insertion in model container [2020-10-27 06:07:16,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:16" (3/3) ... [2020-10-27 06:07:16,718 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:07:16,729 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:07:16,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:07:16,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:07:16,777 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:07:16,777 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:07:16,777 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:07:16,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:07:16,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:07:16,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:07:16,778 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:07:16,778 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:07:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-27 06:07:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 06:07:16,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:16,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:16,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -561736880, now seen corresponding path program 1 times [2020-10-27 06:07:16,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:16,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080678603] [2020-10-27 06:07:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 06:07:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:07:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 06:07:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:07:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 06:07:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:07:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:07:23,768 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:07:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:07:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:23,893 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 06:07:23,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080678603] [2020-10-27 06:07:23,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:23,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:07:23,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672212021] [2020-10-27 06:07:23,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:07:23,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:23,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:07:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:07:23,919 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 4 states. [2020-10-27 06:07:24,772 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:07:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:27,356 INFO L93 Difference]: Finished difference Result 665 states and 1139 transitions. [2020-10-27 06:07:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:07:27,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 06:07:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:27,390 INFO L225 Difference]: With dead ends: 665 [2020-10-27 06:07:27,390 INFO L226 Difference]: Without dead ends: 495 [2020-10-27 06:07:27,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-27 06:07:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 491. [2020-10-27 06:07:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-27 06:07:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 806 transitions. [2020-10-27 06:07:27,556 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 806 transitions. Word has length 123 [2020-10-27 06:07:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:27,557 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 806 transitions. [2020-10-27 06:07:27,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:07:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 806 transitions. [2020-10-27 06:07:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 06:07:27,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:27,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:27,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:07:27,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -948532054, now seen corresponding path program 1 times [2020-10-27 06:07:27,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225933528] [2020-10-27 06:07:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 06:07:32,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:07:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:07:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 06:07:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 06:07:33,526 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:07:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:33,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:07:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:33,661 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 06:07:33,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225933528] [2020-10-27 06:07:33,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:33,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:33,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604241042] [2020-10-27 06:07:33,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:33,667 INFO L87 Difference]: Start difference. First operand 491 states and 806 transitions. Second operand 5 states. [2020-10-27 06:07:37,313 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:07:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:37,512 INFO L93 Difference]: Finished difference Result 1397 states and 2289 transitions. [2020-10-27 06:07:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:37,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 06:07:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:37,521 INFO L225 Difference]: With dead ends: 1397 [2020-10-27 06:07:37,521 INFO L226 Difference]: Without dead ends: 957 [2020-10-27 06:07:37,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-27 06:07:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 954. [2020-10-27 06:07:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-27 06:07:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1562 transitions. [2020-10-27 06:07:37,608 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1562 transitions. Word has length 126 [2020-10-27 06:07:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:37,609 INFO L481 AbstractCegarLoop]: Abstraction has 954 states and 1562 transitions. [2020-10-27 06:07:37,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1562 transitions. [2020-10-27 06:07:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 06:07:37,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:37,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:37,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:07:37,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash -624036959, now seen corresponding path program 1 times [2020-10-27 06:07:37,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:37,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118722791] [2020-10-27 06:07:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:42,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 06:07:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:07:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:07:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:07:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:43,438 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:07:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:43,556 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 06:07:43,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118722791] [2020-10-27 06:07:43,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:43,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:43,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363486497] [2020-10-27 06:07:43,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:43,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:43,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:43,559 INFO L87 Difference]: Start difference. First operand 954 states and 1562 transitions. Second operand 5 states. [2020-10-27 06:07:46,802 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:07:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:46,981 INFO L93 Difference]: Finished difference Result 2802 states and 4589 transitions. [2020-10-27 06:07:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:46,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 06:07:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:46,997 INFO L225 Difference]: With dead ends: 2802 [2020-10-27 06:07:46,998 INFO L226 Difference]: Without dead ends: 1864 [2020-10-27 06:07:47,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2020-10-27 06:07:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1861. [2020-10-27 06:07:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-10-27 06:07:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 3030 transitions. [2020-10-27 06:07:47,144 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 3030 transitions. Word has length 127 [2020-10-27 06:07:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:47,144 INFO L481 AbstractCegarLoop]: Abstraction has 1861 states and 3030 transitions. [2020-10-27 06:07:47,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 3030 transitions. [2020-10-27 06:07:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 06:07:47,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:47,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:47,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:07:47,151 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:47,152 INFO L82 PathProgramCache]: Analyzing trace with hash -736796343, now seen corresponding path program 1 times [2020-10-27 06:07:47,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:47,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810958529] [2020-10-27 06:07:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:52,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 06:07:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:07:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:07:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 06:07:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:53,123 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:07:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:07:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:53,224 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 06:07:53,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810958529] [2020-10-27 06:07:53,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:53,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:53,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670173369] [2020-10-27 06:07:53,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:53,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:53,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:53,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:53,227 INFO L87 Difference]: Start difference. First operand 1861 states and 3030 transitions. Second operand 5 states. [2020-10-27 06:07:56,752 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:07:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:56,969 INFO L93 Difference]: Finished difference Result 5404 states and 8786 transitions. [2020-10-27 06:07:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:56,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 06:07:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:56,990 INFO L225 Difference]: With dead ends: 5404 [2020-10-27 06:07:56,991 INFO L226 Difference]: Without dead ends: 3653 [2020-10-27 06:07:56,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-10-27 06:07:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3650. [2020-10-27 06:07:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2020-10-27 06:07:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5912 transitions. [2020-10-27 06:07:57,283 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5912 transitions. Word has length 128 [2020-10-27 06:07:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:57,284 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5912 transitions. [2020-10-27 06:07:57,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5912 transitions. [2020-10-27 06:07:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 06:07:57,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:57,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:57,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:07:57,295 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -419086572, now seen corresponding path program 1 times [2020-10-27 06:07:57,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:57,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748761226] [2020-10-27 06:07:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:02,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 06:08:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:08:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 06:08:02,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:08:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 06:08:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 06:08:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:03,066 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:08:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:03,140 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 06:08:03,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748761226] [2020-10-27 06:08:03,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:03,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:08:03,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661855885] [2020-10-27 06:08:03,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:08:03,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:03,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:08:03,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:08:03,143 INFO L87 Difference]: Start difference. First operand 3650 states and 5912 transitions. Second operand 4 states. [2020-10-27 06:08:03,888 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:08:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:06,390 INFO L93 Difference]: Finished difference Result 7872 states and 12868 transitions. [2020-10-27 06:08:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:08:06,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 06:08:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:06,423 INFO L225 Difference]: With dead ends: 7872 [2020-10-27 06:08:06,423 INFO L226 Difference]: Without dead ends: 5685 [2020-10-27 06:08:06,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2020-10-27 06:08:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5666. [2020-10-27 06:08:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5666 states. [2020-10-27 06:08:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5666 states to 5666 states and 9208 transitions. [2020-10-27 06:08:06,909 INFO L78 Accepts]: Start accepts. Automaton has 5666 states and 9208 transitions. Word has length 129 [2020-10-27 06:08:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:06,911 INFO L481 AbstractCegarLoop]: Abstraction has 5666 states and 9208 transitions. [2020-10-27 06:08:06,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:08:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5666 states and 9208 transitions. [2020-10-27 06:08:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 06:08:06,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:06,924 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] [2020-10-27 06:08:06,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:08:06,924 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:06,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1101246301, now seen corresponding path program 1 times [2020-10-27 06:08:06,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:06,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674829465] [2020-10-27 06:08:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 06:08:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:12,791 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:08:12,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:12,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:12,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:12,889 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 06:08:12,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674829465] [2020-10-27 06:08:12,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:12,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:12,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898246563] [2020-10-27 06:08:12,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:12,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:12,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:12,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:12,892 INFO L87 Difference]: Start difference. First operand 5666 states and 9208 transitions. Second operand 5 states. [2020-10-27 06:08:16,590 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:08:16,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:16,995 INFO L93 Difference]: Finished difference Result 16216 states and 26270 transitions. [2020-10-27 06:08:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:16,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-27 06:08:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:17,051 INFO L225 Difference]: With dead ends: 16216 [2020-10-27 06:08:17,051 INFO L226 Difference]: Without dead ends: 11053 [2020-10-27 06:08:17,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:17,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11053 states. [2020-10-27 06:08:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11053 to 11050. [2020-10-27 06:08:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11050 states. [2020-10-27 06:08:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11050 states to 11050 states and 17858 transitions. [2020-10-27 06:08:18,173 INFO L78 Accepts]: Start accepts. Automaton has 11050 states and 17858 transitions. Word has length 132 [2020-10-27 06:08:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:18,173 INFO L481 AbstractCegarLoop]: Abstraction has 11050 states and 17858 transitions. [2020-10-27 06:08:18,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11050 states and 17858 transitions. [2020-10-27 06:08:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 06:08:18,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:18,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:18,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:08:18,195 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2126178076, now seen corresponding path program 1 times [2020-10-27 06:08:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:18,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930339959] [2020-10-27 06:08:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:23,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 06:08:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:08:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:08:23,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 06:08:23,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:23,956 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:08:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:23,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:24,022 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 06:08:24,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930339959] [2020-10-27 06:08:24,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:24,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:24,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169027118] [2020-10-27 06:08:24,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:24,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:24,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:24,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:24,024 INFO L87 Difference]: Start difference. First operand 11050 states and 17858 transitions. Second operand 5 states. [2020-10-27 06:08:27,680 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:08:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:28,388 INFO L93 Difference]: Finished difference Result 32320 states and 52168 transitions. [2020-10-27 06:08:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:28,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-27 06:08:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:28,444 INFO L225 Difference]: With dead ends: 32320 [2020-10-27 06:08:28,445 INFO L226 Difference]: Without dead ends: 21517 [2020-10-27 06:08:28,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21517 states. [2020-10-27 06:08:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21517 to 21514. [2020-10-27 06:08:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21514 states. [2020-10-27 06:08:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 34546 transitions. [2020-10-27 06:08:30,462 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 34546 transitions. Word has length 133 [2020-10-27 06:08:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:30,462 INFO L481 AbstractCegarLoop]: Abstraction has 21514 states and 34546 transitions. [2020-10-27 06:08:30,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 34546 transitions. [2020-10-27 06:08:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 06:08:30,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:30,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:30,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:08:30,593 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:30,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:30,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1357650532, now seen corresponding path program 1 times [2020-10-27 06:08:30,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:30,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654879520] [2020-10-27 06:08:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:35,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:35,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 06:08:35,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:08:35,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 06:08:35,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 06:08:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:36,394 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:08:36,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:36,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:36,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:36,461 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 06:08:36,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654879520] [2020-10-27 06:08:36,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:36,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:36,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351017121] [2020-10-27 06:08:36,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:36,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:36,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:36,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:36,463 INFO L87 Difference]: Start difference. First operand 21514 states and 34546 transitions. Second operand 5 states. [2020-10-27 06:08:41,395 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:08:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:42,890 INFO L93 Difference]: Finished difference Result 62572 states and 100284 transitions. [2020-10-27 06:08:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:42,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-27 06:08:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:42,974 INFO L225 Difference]: With dead ends: 62572 [2020-10-27 06:08:42,974 INFO L226 Difference]: Without dead ends: 42089 [2020-10-27 06:08:43,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42089 states. [2020-10-27 06:08:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42089 to 42086. [2020-10-27 06:08:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42086 states. [2020-10-27 06:08:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42086 states to 42086 states and 67160 transitions. [2020-10-27 06:08:46,776 INFO L78 Accepts]: Start accepts. Automaton has 42086 states and 67160 transitions. Word has length 134 [2020-10-27 06:08:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:46,776 INFO L481 AbstractCegarLoop]: Abstraction has 42086 states and 67160 transitions. [2020-10-27 06:08:46,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 42086 states and 67160 transitions. [2020-10-27 06:08:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 06:08:46,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:46,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:46,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:08:46,815 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash 360739448, now seen corresponding path program 1 times [2020-10-27 06:08:46,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:46,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122332925] [2020-10-27 06:08:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 06:08:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:52,589 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:08:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:52,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:52,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:52,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:08:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:52,658 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 06:08:52,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122332925] [2020-10-27 06:08:52,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:52,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:08:52,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826061907] [2020-10-27 06:08:52,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:08:52,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:08:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:08:52,661 INFO L87 Difference]: Start difference. First operand 42086 states and 67160 transitions. Second operand 4 states. [2020-10-27 06:08:53,389 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:09:00,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:00,745 INFO L93 Difference]: Finished difference Result 102508 states and 164956 transitions. [2020-10-27 06:09:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:09:00,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-27 06:09:00,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:00,883 INFO L225 Difference]: With dead ends: 102508 [2020-10-27 06:09:00,883 INFO L226 Difference]: Without dead ends: 71145 [2020-10-27 06:09:00,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71145 states. [2020-10-27 06:09:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71145 to 70886. [2020-10-27 06:09:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70886 states. [2020-10-27 06:09:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70886 states to 70886 states and 113368 transitions. [2020-10-27 06:09:07,561 INFO L78 Accepts]: Start accepts. Automaton has 70886 states and 113368 transitions. Word has length 135 [2020-10-27 06:09:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:07,561 INFO L481 AbstractCegarLoop]: Abstraction has 70886 states and 113368 transitions. [2020-10-27 06:09:07,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:09:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 70886 states and 113368 transitions. [2020-10-27 06:09:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 06:09:07,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:07,757 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] [2020-10-27 06:09:07,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:09:07,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:07,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1093399530, now seen corresponding path program 1 times [2020-10-27 06:09:07,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:07,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173792722] [2020-10-27 06:09:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:12,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:12,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 06:09:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:13,526 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:09:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:13,586 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 06:09:13,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173792722] [2020-10-27 06:09:13,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:13,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:13,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307263615] [2020-10-27 06:09:13,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:13,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:13,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:13,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:13,589 INFO L87 Difference]: Start difference. First operand 70886 states and 113368 transitions. Second operand 5 states. [2020-10-27 06:09:20,173 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:09:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:27,851 INFO L93 Difference]: Finished difference Result 207636 states and 331766 transitions. [2020-10-27 06:09:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:27,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 06:09:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:28,295 INFO L225 Difference]: With dead ends: 207636 [2020-10-27 06:09:28,295 INFO L226 Difference]: Without dead ends: 137873 [2020-10-27 06:09:28,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137873 states. [2020-10-27 06:09:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137873 to 137870. [2020-10-27 06:09:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137870 states. [2020-10-27 06:09:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137870 states to 137870 states and 219154 transitions. [2020-10-27 06:09:40,736 INFO L78 Accepts]: Start accepts. Automaton has 137870 states and 219154 transitions. Word has length 138 [2020-10-27 06:09:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:40,736 INFO L481 AbstractCegarLoop]: Abstraction has 137870 states and 219154 transitions. [2020-10-27 06:09:40,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 137870 states and 219154 transitions. [2020-10-27 06:09:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 06:09:40,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:40,823 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] [2020-10-27 06:09:40,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:09:40,823 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:40,824 INFO L82 PathProgramCache]: Analyzing trace with hash 197867977, now seen corresponding path program 1 times [2020-10-27 06:09:40,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:40,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094713560] [2020-10-27 06:09:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 06:09:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:46,601 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:09:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:46,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:46,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:46,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:09:46,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:46,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:46,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:46,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:46,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:46,660 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 06:09:46,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094713560] [2020-10-27 06:09:46,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:46,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:46,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768817543] [2020-10-27 06:09:46,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:46,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:46,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:46,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:46,662 INFO L87 Difference]: Start difference. First operand 137870 states and 219154 transitions. Second operand 5 states. [2020-10-27 06:09:56,454 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:10:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:12,784 INFO L93 Difference]: Finished difference Result 404895 states and 643175 transitions. [2020-10-27 06:10:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:12,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 06:10:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:13,466 INFO L225 Difference]: With dead ends: 404895 [2020-10-27 06:10:13,466 INFO L226 Difference]: Without dead ends: 268624 [2020-10-27 06:10:13,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268624 states. [2020-10-27 06:10:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268624 to 268621. [2020-10-27 06:10:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268621 states. [2020-10-27 06:10:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268621 states to 268621 states and 424475 transitions. [2020-10-27 06:10:37,678 INFO L78 Accepts]: Start accepts. Automaton has 268621 states and 424475 transitions. Word has length 139 [2020-10-27 06:10:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:37,678 INFO L481 AbstractCegarLoop]: Abstraction has 268621 states and 424475 transitions. [2020-10-27 06:10:37,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 268621 states and 424475 transitions. [2020-10-27 06:10:38,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 06:10:38,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:38,244 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] [2020-10-27 06:10:38,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:10:38,244 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash -283388791, now seen corresponding path program 1 times [2020-10-27 06:10:38,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:38,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181322874] [2020-10-27 06:10:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:38,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:43,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 06:10:43,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:10:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-27 06:10:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 06:10:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:44,202 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:10:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:44,268 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 06:10:44,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181322874] [2020-10-27 06:10:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:44,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:44,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915167677] [2020-10-27 06:10:44,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:44,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:44,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:44,270 INFO L87 Difference]: Start difference. First operand 268621 states and 424475 transitions. Second operand 5 states.