/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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:00:48,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:00:48,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:00:48,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:00:48,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:00:48,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:00:48,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:00:48,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:00:48,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:00:48,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:00:48,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:00:48,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:00:48,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:00:48,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:00:48,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:00:48,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:00:48,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:00:48,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:00:48,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:00:48,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:00:48,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:00:49,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:00:49,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:00:49,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:00:49,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:00:49,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:00:49,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:00:49,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:00:49,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:00:49,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:00:49,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:00:49,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:00:49,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:00:49,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:00:49,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:00:49,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:00:49,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:00:49,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:00:49,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:00:49,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:00:49,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:00:49,024 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 05:00:49,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:00:49,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:00:49,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:00:49,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:00:49,076 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:00:49,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:00:49,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:00:49,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:00:49,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:00:49,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:00:49,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:00:49,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:00:49,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:00:49,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:00:49,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:00:49,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:00:49,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:00:49,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:00:49,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:00:49,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:00:49,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:00:49,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:49,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:00:49,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:00:49,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:00:49,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:00:49,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:00:49,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:00:49,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:00:49,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:00:49,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:00:49,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:00:49,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:00:49,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:00:49,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:00:49,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 05:00:49,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5317120/fd7495cf01b746c187741479324a4037/FLAGaf47aa3d0 [2020-10-27 05:00:50,420 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:00:50,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 05:00:50,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5317120/fd7495cf01b746c187741479324a4037/FLAGaf47aa3d0 [2020-10-27 05:00:50,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5317120/fd7495cf01b746c187741479324a4037 [2020-10-27 05:00:50,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:00:50,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:00:50,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:50,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:00:50,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:00:50,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:50" (1/1) ... [2020-10-27 05:00:50,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9aa0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:50, skipping insertion in model container [2020-10-27 05:00:50,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:50" (1/1) ... [2020-10-27 05:00:50,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:00:50,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:00:51,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:52,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:00:52,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:52,766 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:00:52,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52 WrapperNode [2020-10-27 05:00:52,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:52,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:00:52,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:00:52,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:00:52,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (1/1) ... [2020-10-27 05:00:52,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:00:52,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:00:52,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:00:52,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:00:52,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (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 05:00:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:00:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:00:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:00:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:00:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:00:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:00:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:00:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:00:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:00:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:00:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:00:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:00:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:00:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:00:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:00:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:00:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:00:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:00:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:00:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:00:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:00:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:00:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:00:56,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:00:56,315 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:00:56,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:56 BoogieIcfgContainer [2020-10-27 05:00:56,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:00:56,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:00:56,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:00:56,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:00:56,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:00:50" (1/3) ... [2020-10-27 05:00:56,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd2a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:56, skipping insertion in model container [2020-10-27 05:00:56,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:52" (2/3) ... [2020-10-27 05:00:56,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd2a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:56, skipping insertion in model container [2020-10-27 05:00:56,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:56" (3/3) ... [2020-10-27 05:00:56,328 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 05:00:56,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:00:56,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:00:56,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:00:56,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:00:56,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:00:56,392 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:00:56,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:00:56,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:00:56,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:00:56,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:00:56,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:00:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states. [2020-10-27 05:00:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 05:00:56,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:56,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:56,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:56,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1639303667, now seen corresponding path program 1 times [2020-10-27 05:00:56,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:56,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952392714] [2020-10-27 05:00:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:59,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 05:01:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:01:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:01:02,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:02,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 05:01:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:01:03,731 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:01:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:04,051 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 05:01:04,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952392714] [2020-10-27 05:01:04,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:04,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:04,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525390820] [2020-10-27 05:01:04,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:04,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:04,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:04,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:04,077 INFO L87 Difference]: Start difference. First operand 914 states. Second operand 5 states. [2020-10-27 05:01:14,408 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:01:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:16,796 INFO L93 Difference]: Finished difference Result 2665 states and 4856 transitions. [2020-10-27 05:01:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:01:16,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 05:01:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:16,827 INFO L225 Difference]: With dead ends: 2665 [2020-10-27 05:01:16,827 INFO L226 Difference]: Without dead ends: 1758 [2020-10-27 05:01:16,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2020-10-27 05:01:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1677. [2020-10-27 05:01:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-10-27 05:01:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2580 transitions. [2020-10-27 05:01:17,017 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2580 transitions. Word has length 303 [2020-10-27 05:01:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:17,018 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 2580 transitions. [2020-10-27 05:01:17,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2580 transitions. [2020-10-27 05:01:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 05:01:17,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:17,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:17,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:01:17,033 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1291525755, now seen corresponding path program 1 times [2020-10-27 05:01:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:17,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072993926] [2020-10-27 05:01:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:17,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:22,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 05:01:22,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:01:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 05:01:22,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:01:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:23,192 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:23,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:23,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:23,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:01:23,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:23,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:23,426 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 05:01:23,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072993926] [2020-10-27 05:01:23,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:23,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:23,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033465526] [2020-10-27 05:01:23,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:23,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:23,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:23,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:23,431 INFO L87 Difference]: Start difference. First operand 1677 states and 2580 transitions. Second operand 5 states. [2020-10-27 05:01:32,074 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:01:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:34,221 INFO L93 Difference]: Finished difference Result 4859 states and 7447 transitions. [2020-10-27 05:01:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:34,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 05:01:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:34,241 INFO L225 Difference]: With dead ends: 4859 [2020-10-27 05:01:34,241 INFO L226 Difference]: Without dead ends: 3255 [2020-10-27 05:01:34,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-27 05:01:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3174. [2020-10-27 05:01:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-10-27 05:01:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4850 transitions. [2020-10-27 05:01:34,414 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4850 transitions. Word has length 305 [2020-10-27 05:01:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:34,415 INFO L481 AbstractCegarLoop]: Abstraction has 3174 states and 4850 transitions. [2020-10-27 05:01:34,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4850 transitions. [2020-10-27 05:01:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 05:01:34,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:34,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:34,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:01:34,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1377577751, now seen corresponding path program 1 times [2020-10-27 05:01:34,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:34,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290168648] [2020-10-27 05:01:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:01:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:40,503 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:40,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:40,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:40,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:40,707 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 05:01:40,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290168648] [2020-10-27 05:01:40,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:40,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:40,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286205120] [2020-10-27 05:01:40,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:40,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:40,711 INFO L87 Difference]: Start difference. First operand 3174 states and 4850 transitions. Second operand 5 states. [2020-10-27 05:01:48,954 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:01:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:51,166 INFO L93 Difference]: Finished difference Result 9296 states and 14162 transitions. [2020-10-27 05:01:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:51,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-27 05:01:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:51,199 INFO L225 Difference]: With dead ends: 9296 [2020-10-27 05:01:51,200 INFO L226 Difference]: Without dead ends: 6187 [2020-10-27 05:01:51,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6187 states. [2020-10-27 05:01:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6187 to 6135. [2020-10-27 05:01:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6135 states. [2020-10-27 05:01:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 9293 transitions. [2020-10-27 05:01:51,495 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 9293 transitions. Word has length 307 [2020-10-27 05:01:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:51,497 INFO L481 AbstractCegarLoop]: Abstraction has 6135 states and 9293 transitions. [2020-10-27 05:01:51,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:51,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 9293 transitions. [2020-10-27 05:01:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 05:01:51,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:51,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:51,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:01:51,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash -91173142, now seen corresponding path program 1 times [2020-10-27 05:01:51,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822594316] [2020-10-27 05:01:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:56,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 05:01:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:01:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:01:56,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 05:01:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:57,642 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 05:01:57,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:57,878 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 05:01:57,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822594316] [2020-10-27 05:01:57,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:57,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:57,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312930896] [2020-10-27 05:01:57,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:57,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:57,881 INFO L87 Difference]: Start difference. First operand 6135 states and 9293 transitions. Second operand 5 states. [2020-10-27 05:02:06,861 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:02:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:09,287 INFO L93 Difference]: Finished difference Result 17729 states and 26740 transitions. [2020-10-27 05:02:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:09,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 05:02:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:09,348 INFO L225 Difference]: With dead ends: 17729 [2020-10-27 05:02:09,349 INFO L226 Difference]: Without dead ends: 11963 [2020-10-27 05:02:09,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11963 states. [2020-10-27 05:02:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11963 to 11857. [2020-10-27 05:02:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11857 states. [2020-10-27 05:02:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 17847 transitions. [2020-10-27 05:02:10,154 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 17847 transitions. Word has length 309 [2020-10-27 05:02:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:10,155 INFO L481 AbstractCegarLoop]: Abstraction has 11857 states and 17847 transitions. [2020-10-27 05:02:10,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 17847 transitions. [2020-10-27 05:02:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:02:10,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:10,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:10,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:02:10,183 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:10,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1886023031, now seen corresponding path program 1 times [2020-10-27 05:02:10,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:10,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28265884] [2020-10-27 05:02:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:11,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:02:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 05:02:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:16,230 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:16,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:16,408 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 05:02:16,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28265884] [2020-10-27 05:02:16,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:16,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:16,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213438482] [2020-10-27 05:02:16,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:16,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:16,410 INFO L87 Difference]: Start difference. First operand 11857 states and 17847 transitions. Second operand 5 states. [2020-10-27 05:02:26,078 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:02:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:28,796 INFO L93 Difference]: Finished difference Result 35117 states and 52794 transitions. [2020-10-27 05:02:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:28,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:02:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:28,869 INFO L225 Difference]: With dead ends: 35117 [2020-10-27 05:02:28,869 INFO L226 Difference]: Without dead ends: 23346 [2020-10-27 05:02:28,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23346 states. [2020-10-27 05:02:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23346 to 23246. [2020-10-27 05:02:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23246 states. [2020-10-27 05:02:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23246 states to 23246 states and 34738 transitions. [2020-10-27 05:02:30,080 INFO L78 Accepts]: Start accepts. Automaton has 23246 states and 34738 transitions. Word has length 311 [2020-10-27 05:02:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 23246 states and 34738 transitions. [2020-10-27 05:02:30,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 23246 states and 34738 transitions. [2020-10-27 05:02:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:02:30,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:30,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:30,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:02:30,130 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1954494626, now seen corresponding path program 1 times [2020-10-27 05:02:30,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:30,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057067837] [2020-10-27 05:02:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:35,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 05:02:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:36,275 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:36,429 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 05:02:36,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057067837] [2020-10-27 05:02:36,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:36,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:36,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814301137] [2020-10-27 05:02:36,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:36,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:36,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:36,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:36,431 INFO L87 Difference]: Start difference. First operand 23246 states and 34738 transitions. Second operand 5 states. [2020-10-27 05:02:46,481 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:02:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:49,302 INFO L93 Difference]: Finished difference Result 68361 states and 101975 transitions. [2020-10-27 05:02:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:49,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 05:02:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:49,399 INFO L225 Difference]: With dead ends: 68361 [2020-10-27 05:02:49,399 INFO L226 Difference]: Without dead ends: 45497 [2020-10-27 05:02:49,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45497 states. [2020-10-27 05:02:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45497 to 45387. [2020-10-27 05:02:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45387 states. [2020-10-27 05:02:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45387 states to 45387 states and 67249 transitions. [2020-10-27 05:02:51,872 INFO L78 Accepts]: Start accepts. Automaton has 45387 states and 67249 transitions. Word has length 313 [2020-10-27 05:02:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:51,872 INFO L481 AbstractCegarLoop]: Abstraction has 45387 states and 67249 transitions. [2020-10-27 05:02:51,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 45387 states and 67249 transitions. [2020-10-27 05:02:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 05:02:51,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:51,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:51,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:02:51,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1262502687, now seen corresponding path program 1 times [2020-10-27 05:02:51,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275588653] [2020-10-27 05:02:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 05:02:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:57,969 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:57,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:58,139 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 05:02:58,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275588653] [2020-10-27 05:02:58,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:58,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:58,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249742128] [2020-10-27 05:02:58,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:58,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:58,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:58,141 INFO L87 Difference]: Start difference. First operand 45387 states and 67249 transitions. Second operand 5 states. [2020-10-27 05:03:10,163 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:03:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:13,562 INFO L93 Difference]: Finished difference Result 133419 states and 197286 transitions. [2020-10-27 05:03:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:13,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 05:03:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:13,780 INFO L225 Difference]: With dead ends: 133419 [2020-10-27 05:03:13,780 INFO L226 Difference]: Without dead ends: 88901 [2020-10-27 05:03:13,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88901 states. [2020-10-27 05:03:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88901 to 88791. [2020-10-27 05:03:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88791 states. [2020-10-27 05:03:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88791 states to 88791 states and 130320 transitions. [2020-10-27 05:03:18,963 INFO L78 Accepts]: Start accepts. Automaton has 88791 states and 130320 transitions. Word has length 315 [2020-10-27 05:03:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:18,963 INFO L481 AbstractCegarLoop]: Abstraction has 88791 states and 130320 transitions. [2020-10-27 05:03:18,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:18,963 INFO L276 IsEmpty]: Start isEmpty. Operand 88791 states and 130320 transitions. [2020-10-27 05:03:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 05:03:19,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:19,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:03:19,040 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1120445381, now seen corresponding path program 1 times [2020-10-27 05:03:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698915582] [2020-10-27 05:03:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:24,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:24,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 05:03:24,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:03:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:03:24,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:03:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:25,039 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:03:25,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:25,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:03:25,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:25,181 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 05:03:25,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698915582] [2020-10-27 05:03:25,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:25,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:25,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777284409] [2020-10-27 05:03:25,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:25,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:25,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:25,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:25,184 INFO L87 Difference]: Start difference. First operand 88791 states and 130320 transitions. Second operand 5 states. [2020-10-27 05:03:40,521 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:03:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:45,245 INFO L93 Difference]: Finished difference Result 262595 states and 384876 transitions. [2020-10-27 05:03:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:45,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 05:03:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:45,560 INFO L225 Difference]: With dead ends: 262595 [2020-10-27 05:03:45,560 INFO L226 Difference]: Without dead ends: 174432 [2020-10-27 05:03:45,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174432 states. [2020-10-27 05:03:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174432 to 174322. [2020-10-27 05:03:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174322 states. [2020-10-27 05:03:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174322 states to 174322 states and 253984 transitions. [2020-10-27 05:03:55,938 INFO L78 Accepts]: Start accepts. Automaton has 174322 states and 253984 transitions. Word has length 317 [2020-10-27 05:03:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:55,938 INFO L481 AbstractCegarLoop]: Abstraction has 174322 states and 253984 transitions. [2020-10-27 05:03:55,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 174322 states and 253984 transitions. [2020-10-27 05:03:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 05:03:56,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:56,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:56,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:03:56,119 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1212740534, now seen corresponding path program 1 times [2020-10-27 05:03:56,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:56,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170752925] [2020-10-27 05:03:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:04:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 05:04:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:02,084 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:04:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:02,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:02,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:04:02,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:02,219 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 05:04:02,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170752925] [2020-10-27 05:04:02,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:02,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:04:02,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270050890] [2020-10-27 05:04:02,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:04:02,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:02,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:04:02,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:04:02,222 INFO L87 Difference]: Start difference. First operand 174322 states and 253984 transitions. Second operand 4 states. [2020-10-27 05:04:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:28,473 INFO L93 Difference]: Finished difference Result 522689 states and 761505 transitions. [2020-10-27 05:04:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 05:04:28,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-27 05:04:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:29,169 INFO L225 Difference]: With dead ends: 522689 [2020-10-27 05:04:29,169 INFO L226 Difference]: Without dead ends: 348494