/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.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:02:43,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:02:43,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:02:43,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:02:43,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:02:43,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:02:43,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:02:43,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:02:43,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:02:43,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:02:43,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:02:43,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:02:43,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:02:43,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:02:43,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:02:43,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:02:43,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:02:43,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:02:43,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:02:43,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:02:43,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:02:43,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:02:43,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:02:43,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:02:43,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:02:43,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:02:43,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:02:43,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:02:43,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:02:43,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:02:43,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:02:43,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:02:43,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:02:43,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:02:43,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:02:43,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:02:43,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:02:43,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:02:43,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:02:43,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:02:43,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:02:43,343 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 05:02:43,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:02:43,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:02:43,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:02:43,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:02:43,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:02:43,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:02:43,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:02:43,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:02:43,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:02:43,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:02:43,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:02:43,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:02:43,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:02:43,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:02:43,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:02:43,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:02:43,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:02:43,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:02:43,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:02:43,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:02:43,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:02:43,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:02:43,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:02:43,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:02:43,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:02:43,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:02:43,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:02:43,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:02:43,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:02:43,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:02:43,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:02:43,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:02:43,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:02:43,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:02:43,825 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:02:43,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:02:43,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86438f8da/627080c932354ddcbf1092d07f46f3ef/FLAG29dafd469 [2020-10-27 05:02:44,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:02:44,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:02:44,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86438f8da/627080c932354ddcbf1092d07f46f3ef/FLAG29dafd469 [2020-10-27 05:02:44,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86438f8da/627080c932354ddcbf1092d07f46f3ef [2020-10-27 05:02:44,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:02:44,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:02:44,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:02:44,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:02:44,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:02:44,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:02:44" (1/1) ... [2020-10-27 05:02:45,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b79c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:44, skipping insertion in model container [2020-10-27 05:02:45,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:02:44" (1/1) ... [2020-10-27 05:02:45,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:02:45,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:02:45,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:02:45,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:02:45,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:02:45,868 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:02:45,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45 WrapperNode [2020-10-27 05:02:45,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:02:45,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:02:45,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:02:45,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:02:45,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (1/1) ... [2020-10-27 05:02:45,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:02:45,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:02:45,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:02:45,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:02:45,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (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 05:02:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:02:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:02:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:02:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:02:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:02:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:02:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:02:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:02:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:02:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:02:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:02:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:02:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:02:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:02:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:02:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:02:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:02:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:02:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:02:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:02:46,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:02:46,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:02:47,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:02:47,928 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:02:47,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:02:47 BoogieIcfgContainer [2020-10-27 05:02:47,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:02:47,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:02:47,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:02:47,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:02:47,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:02:44" (1/3) ... [2020-10-27 05:02:47,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cd0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:02:47, skipping insertion in model container [2020-10-27 05:02:47,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:02:45" (2/3) ... [2020-10-27 05:02:47,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cd0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:02:47, skipping insertion in model container [2020-10-27 05:02:47,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:02:47" (3/3) ... [2020-10-27 05:02:47,939 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:02:47,952 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:02:47,958 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:02:47,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:02:48,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:02:48,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:02:48,003 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:02:48,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:02:48,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:02:48,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:02:48,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:02:48,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:02:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-27 05:02:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:02:48,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:48,046 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] [2020-10-27 05:02:48,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1566272280, now seen corresponding path program 1 times [2020-10-27 05:02:48,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:48,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724684944] [2020-10-27 05:02:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:53,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:02:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:02:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 05:02:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:02:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 05:02:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:02:54,427 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:02:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 05:02:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:54,533 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 05:02:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724684944] [2020-10-27 05:02:54,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:54,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:02:54,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980465885] [2020-10-27 05:02:54,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:02:54,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:02:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:02:54,559 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-27 05:02:55,244 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 05:02:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:57,561 INFO L93 Difference]: Finished difference Result 581 states and 1006 transitions. [2020-10-27 05:02:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:02:57,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-27 05:02:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:57,585 INFO L225 Difference]: With dead ends: 581 [2020-10-27 05:02:57,585 INFO L226 Difference]: Without dead ends: 438 [2020-10-27 05:02:57,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-27 05:02:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 435. [2020-10-27 05:02:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-27 05:02:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 719 transitions. [2020-10-27 05:02:57,685 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 719 transitions. Word has length 116 [2020-10-27 05:02:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:57,687 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 719 transitions. [2020-10-27 05:02:57,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:02:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 719 transitions. [2020-10-27 05:02:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:02:57,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:57,695 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] [2020-10-27 05:02:57,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:02:57,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:57,696 INFO L82 PathProgramCache]: Analyzing trace with hash 353479814, now seen corresponding path program 1 times [2020-10-27 05:02:57,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:57,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077716893] [2020-10-27 05:02:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:02,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:03:02,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 05:03:02,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:03:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:03,592 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:03:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:03,737 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 05:03:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077716893] [2020-10-27 05:03:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:03,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143594516] [2020-10-27 05:03:03,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:03,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:03,742 INFO L87 Difference]: Start difference. First operand 435 states and 719 transitions. Second operand 5 states. [2020-10-27 05:03:07,106 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:07,241 INFO L93 Difference]: Finished difference Result 1231 states and 2032 transitions. [2020-10-27 05:03:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:07,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 05:03:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:07,249 INFO L225 Difference]: With dead ends: 1231 [2020-10-27 05:03:07,249 INFO L226 Difference]: Without dead ends: 847 [2020-10-27 05:03:07,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-27 05:03:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-27 05:03:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-27 05:03:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1392 transitions. [2020-10-27 05:03:07,345 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1392 transitions. Word has length 119 [2020-10-27 05:03:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:07,346 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1392 transitions. [2020-10-27 05:03:07,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1392 transitions. [2020-10-27 05:03:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:03:07,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:07,350 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] [2020-10-27 05:03:07,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:03:07,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1834212716, now seen corresponding path program 1 times [2020-10-27 05:03:07,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:07,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795763521] [2020-10-27 05:03:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:08,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:12,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:12,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:03:12,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:03:12,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:03:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:13,241 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:13,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:13,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:13,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:03:13,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:13,349 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 05:03:13,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795763521] [2020-10-27 05:03:13,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:13,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:13,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838135435] [2020-10-27 05:03:13,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:13,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:13,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:13,352 INFO L87 Difference]: Start difference. First operand 844 states and 1392 transitions. Second operand 5 states. [2020-10-27 05:03:16,825 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:16,983 INFO L93 Difference]: Finished difference Result 2348 states and 3854 transitions. [2020-10-27 05:03:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:16,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 05:03:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:16,995 INFO L225 Difference]: With dead ends: 2348 [2020-10-27 05:03:16,995 INFO L226 Difference]: Without dead ends: 1621 [2020-10-27 05:03:16,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-27 05:03:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1618. [2020-10-27 05:03:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2020-10-27 05:03:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2657 transitions. [2020-10-27 05:03:17,139 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2657 transitions. Word has length 119 [2020-10-27 05:03:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:17,140 INFO L481 AbstractCegarLoop]: Abstraction has 1618 states and 2657 transitions. [2020-10-27 05:03:17,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2657 transitions. [2020-10-27 05:03:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:03:17,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:17,146 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] [2020-10-27 05:03:17,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:03:17,146 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:17,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1910227130, now seen corresponding path program 1 times [2020-10-27 05:03:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:17,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166378273] [2020-10-27 05:03:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:22,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:22,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:03:22,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:03:22,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:03:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:03:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:03:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:23,046 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:23,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 05:03:23,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:03:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:03:23,232 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 05:03:23,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166378273] [2020-10-27 05:03:23,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:23,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:03:23,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331083274] [2020-10-27 05:03:23,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:03:23,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:03:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:03:23,235 INFO L87 Difference]: Start difference. First operand 1618 states and 2657 transitions. Second operand 8 states. [2020-10-27 05:03:23,910 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:26,928 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:03:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:27,407 INFO L93 Difference]: Finished difference Result 3672 states and 6098 transitions. [2020-10-27 05:03:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:03:27,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-27 05:03:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:27,424 INFO L225 Difference]: With dead ends: 3672 [2020-10-27 05:03:27,424 INFO L226 Difference]: Without dead ends: 2751 [2020-10-27 05:03:27,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:03:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2020-10-27 05:03:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1640. [2020-10-27 05:03:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-10-27 05:03:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2673 transitions. [2020-10-27 05:03:27,601 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2673 transitions. Word has length 120 [2020-10-27 05:03:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:27,601 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2673 transitions. [2020-10-27 05:03:27,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:03:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2673 transitions. [2020-10-27 05:03:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:03:27,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:27,606 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] [2020-10-27 05:03:27,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:03:27,607 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 402128205, now seen corresponding path program 1 times [2020-10-27 05:03:27,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:27,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264067921] [2020-10-27 05:03:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:32,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:32,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:03:32,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:03:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:03:32,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:03:32,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:33,606 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:33,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:33,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:03:33,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:33,717 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 05:03:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264067921] [2020-10-27 05:03:33,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:33,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:33,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860287121] [2020-10-27 05:03:33,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:33,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:33,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:33,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:33,733 INFO L87 Difference]: Start difference. First operand 1640 states and 2673 transitions. Second operand 5 states. [2020-10-27 05:03:37,071 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:37,225 INFO L93 Difference]: Finished difference Result 4712 states and 7657 transitions. [2020-10-27 05:03:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:37,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:03:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:37,244 INFO L225 Difference]: With dead ends: 4712 [2020-10-27 05:03:37,245 INFO L226 Difference]: Without dead ends: 3181 [2020-10-27 05:03:37,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2020-10-27 05:03:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3178. [2020-10-27 05:03:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-27 05:03:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5144 transitions. [2020-10-27 05:03:37,596 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5144 transitions. Word has length 120 [2020-10-27 05:03:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:37,596 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 5144 transitions. [2020-10-27 05:03:37,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5144 transitions. [2020-10-27 05:03:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:03:37,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:37,609 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] [2020-10-27 05:03:37,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:03:37,609 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:37,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1492973029, now seen corresponding path program 1 times [2020-10-27 05:03:37,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:37,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66571966] [2020-10-27 05:03:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:42,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:42,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:03:42,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:42,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 05:03:42,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:03:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:03:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 05:03:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:43,387 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:03:43,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:03:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:43,507 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 05:03:43,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66571966] [2020-10-27 05:03:43,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:43,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:03:43,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414733881] [2020-10-27 05:03:43,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:03:43,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:03:43,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:03:43,510 INFO L87 Difference]: Start difference. First operand 3178 states and 5144 transitions. Second operand 8 states. [2020-10-27 05:03:44,197 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:47,866 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:03:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:48,547 INFO L93 Difference]: Finished difference Result 5749 states and 9405 transitions. [2020-10-27 05:03:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:03:48,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-27 05:03:48,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:48,577 INFO L225 Difference]: With dead ends: 5749 [2020-10-27 05:03:48,577 INFO L226 Difference]: Without dead ends: 5260 [2020-10-27 05:03:48,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:03:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-10-27 05:03:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 3178. [2020-10-27 05:03:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-27 05:03:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5140 transitions. [2020-10-27 05:03:48,970 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5140 transitions. Word has length 121 [2020-10-27 05:03:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:48,971 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 5140 transitions. [2020-10-27 05:03:48,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:03:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5140 transitions. [2020-10-27 05:03:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:03:48,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:48,979 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] [2020-10-27 05:03:48,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:03:48,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1198250679, now seen corresponding path program 1 times [2020-10-27 05:03:48,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:48,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873272667] [2020-10-27 05:03:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:03:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:54,784 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:54,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:54,877 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 05:03:54,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873272667] [2020-10-27 05:03:54,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:54,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:54,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650279408] [2020-10-27 05:03:54,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:54,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:54,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:54,880 INFO L87 Difference]: Start difference. First operand 3178 states and 5140 transitions. Second operand 5 states. [2020-10-27 05:03:58,275 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:58,561 INFO L93 Difference]: Finished difference Result 9142 states and 14740 transitions. [2020-10-27 05:03:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:58,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:03:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:58,596 INFO L225 Difference]: With dead ends: 9142 [2020-10-27 05:03:58,596 INFO L226 Difference]: Without dead ends: 6155 [2020-10-27 05:03:58,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-10-27 05:03:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 6152. [2020-10-27 05:03:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6152 states. [2020-10-27 05:03:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 9894 transitions. [2020-10-27 05:03:59,402 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 9894 transitions. Word has length 121 [2020-10-27 05:03:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:59,403 INFO L481 AbstractCegarLoop]: Abstraction has 6152 states and 9894 transitions. [2020-10-27 05:03:59,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 9894 transitions. [2020-10-27 05:03:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:03:59,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:59,420 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] [2020-10-27 05:03:59,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:03:59,421 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash 803358010, now seen corresponding path program 1 times [2020-10-27 05:03:59,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:59,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732968092] [2020-10-27 05:03:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:04:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:05,208 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:04:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:05,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:04:05,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:05,271 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 05:04:05,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732968092] [2020-10-27 05:04:05,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:05,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:05,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122886766] [2020-10-27 05:04:05,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:05,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:05,273 INFO L87 Difference]: Start difference. First operand 6152 states and 9894 transitions. Second operand 5 states. [2020-10-27 05:04:08,897 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:04:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:09,286 INFO L93 Difference]: Finished difference Result 17793 states and 28563 transitions. [2020-10-27 05:04:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:09,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:04:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:09,335 INFO L225 Difference]: With dead ends: 17793 [2020-10-27 05:04:09,335 INFO L226 Difference]: Without dead ends: 12122 [2020-10-27 05:04:09,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12122 states. [2020-10-27 05:04:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12122 to 12119. [2020-10-27 05:04:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12119 states. [2020-10-27 05:04:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12119 states to 12119 states and 19415 transitions. [2020-10-27 05:04:10,674 INFO L78 Accepts]: Start accepts. Automaton has 12119 states and 19415 transitions. Word has length 121 [2020-10-27 05:04:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:10,674 INFO L481 AbstractCegarLoop]: Abstraction has 12119 states and 19415 transitions. [2020-10-27 05:04:10,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12119 states and 19415 transitions. [2020-10-27 05:04:10,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:04:10,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:10,703 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] [2020-10-27 05:04:10,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:04:10,703 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1437499645, now seen corresponding path program 1 times [2020-10-27 05:04:10,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:10,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70622646] [2020-10-27 05:04:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:11,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:14,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:04:14,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:04:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-27 05:04:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:14,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:04:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:04:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:15,465 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:04:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:15,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:15,519 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 05:04:15,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70622646] [2020-10-27 05:04:15,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:15,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:04:15,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243339443] [2020-10-27 05:04:15,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:04:15,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:04:15,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:04:15,521 INFO L87 Difference]: Start difference. First operand 12119 states and 19415 transitions. Second operand 4 states. [2020-10-27 05:04:16,271 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 05:04:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:20,039 INFO L93 Difference]: Finished difference Result 25373 states and 41115 transitions. [2020-10-27 05:04:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:04:20,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-27 05:04:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:20,096 INFO L225 Difference]: With dead ends: 25373 [2020-10-27 05:04:20,096 INFO L226 Difference]: Without dead ends: 18474 [2020-10-27 05:04:20,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2020-10-27 05:04:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 18471. [2020-10-27 05:04:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18471 states. [2020-10-27 05:04:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18471 states to 18471 states and 29703 transitions. [2020-10-27 05:04:22,233 INFO L78 Accepts]: Start accepts. Automaton has 18471 states and 29703 transitions. Word has length 122 [2020-10-27 05:04:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:22,233 INFO L481 AbstractCegarLoop]: Abstraction has 18471 states and 29703 transitions. [2020-10-27 05:04:22,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:04:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 18471 states and 29703 transitions. [2020-10-27 05:04:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:04:22,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:22,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:22,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:04:22,274 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:22,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:22,275 INFO L82 PathProgramCache]: Analyzing trace with hash -790540284, now seen corresponding path program 1 times [2020-10-27 05:04:22,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:22,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842467961] [2020-10-27 05:04:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:27,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:27,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:04:27,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:04:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 05:04:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:04:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:28,138 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:04:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:28,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:28,223 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 05:04:28,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842467961] [2020-10-27 05:04:28,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:28,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:28,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587163658] [2020-10-27 05:04:28,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:28,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:28,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:28,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:28,225 INFO L87 Difference]: Start difference. First operand 18471 states and 29703 transitions. Second operand 5 states. [2020-10-27 05:04:33,097 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:04:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:35,433 INFO L93 Difference]: Finished difference Result 53230 states and 85363 transitions. [2020-10-27 05:04:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:35,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 05:04:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:35,529 INFO L225 Difference]: With dead ends: 53230 [2020-10-27 05:04:35,530 INFO L226 Difference]: Without dead ends: 36107 [2020-10-27 05:04:35,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36107 states. [2020-10-27 05:04:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36107 to 36104. [2020-10-27 05:04:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36104 states. [2020-10-27 05:04:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36104 states to 36104 states and 57679 transitions. [2020-10-27 05:04:40,096 INFO L78 Accepts]: Start accepts. Automaton has 36104 states and 57679 transitions. Word has length 126 [2020-10-27 05:04:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:40,096 INFO L481 AbstractCegarLoop]: Abstraction has 36104 states and 57679 transitions. [2020-10-27 05:04:40,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 36104 states and 57679 transitions. [2020-10-27 05:04:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:04:40,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:40,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:40,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:04:40,135 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1030479667, now seen corresponding path program 1 times [2020-10-27 05:04:40,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:40,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666855449] [2020-10-27 05:04:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:04:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:04:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:04:45,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:04:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:04:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:04:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:45,860 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:04:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:04:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:45,943 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 05:04:45,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666855449] [2020-10-27 05:04:45,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:45,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:04:45,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751804499] [2020-10-27 05:04:45,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:04:45,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:45,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:04:45,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:04:45,945 INFO L87 Difference]: Start difference. First operand 36104 states and 57679 transitions. Second operand 8 states. [2020-10-27 05:04:46,651 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:04:51,411 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:04:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:57,556 INFO L93 Difference]: Finished difference Result 88222 states and 142435 transitions. [2020-10-27 05:04:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:04:57,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-27 05:04:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:57,663 INFO L225 Difference]: With dead ends: 88222 [2020-10-27 05:04:57,664 INFO L226 Difference]: Without dead ends: 62363 [2020-10-27 05:04:57,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:04:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62363 states. [2020-10-27 05:05:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62363 to 37544. [2020-10-27 05:05:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37544 states. [2020-10-27 05:05:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37544 states to 37544 states and 59247 transitions. [2020-10-27 05:05:03,077 INFO L78 Accepts]: Start accepts. Automaton has 37544 states and 59247 transitions. Word has length 126 [2020-10-27 05:05:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:03,077 INFO L481 AbstractCegarLoop]: Abstraction has 37544 states and 59247 transitions. [2020-10-27 05:05:03,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:05:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 37544 states and 59247 transitions. [2020-10-27 05:05:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:05:03,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:03,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:03,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:05:03,102 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash 889161360, now seen corresponding path program 1 times [2020-10-27 05:05:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:03,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393262524] [2020-10-27 05:05:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:08,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:08,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 05:05:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:08,838 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:05:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:08,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:08,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:08,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:05:08,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:08,905 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 05:05:08,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393262524] [2020-10-27 05:05:08,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:08,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:08,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256907715] [2020-10-27 05:05:08,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:08,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:08,909 INFO L87 Difference]: Start difference. First operand 37544 states and 59247 transitions. Second operand 5 states. [2020-10-27 05:05:15,748 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:05:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:21,229 INFO L93 Difference]: Finished difference Result 110015 states and 173345 transitions. [2020-10-27 05:05:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:21,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 05:05:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:21,348 INFO L225 Difference]: With dead ends: 110015 [2020-10-27 05:05:21,348 INFO L226 Difference]: Without dead ends: 73240 [2020-10-27 05:05:21,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73240 states. [2020-10-27 05:05:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73240 to 73237. [2020-10-27 05:05:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73237 states. [2020-10-27 05:05:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73237 states to 73237 states and 114715 transitions. [2020-10-27 05:05:31,306 INFO L78 Accepts]: Start accepts. Automaton has 73237 states and 114715 transitions. Word has length 126 [2020-10-27 05:05:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:31,307 INFO L481 AbstractCegarLoop]: Abstraction has 73237 states and 114715 transitions. [2020-10-27 05:05:31,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 73237 states and 114715 transitions. [2020-10-27 05:05:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:05:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:31,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:31,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:05:31,554 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:31,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1184465014, now seen corresponding path program 1 times [2020-10-27 05:05:31,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:31,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536283417] [2020-10-27 05:05:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:05:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:05:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:05:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:37,336 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:05:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:05:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:37,431 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 05:05:37,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536283417] [2020-10-27 05:05:37,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:37,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:05:37,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864602099] [2020-10-27 05:05:37,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:05:37,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:37,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:05:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:05:37,433 INFO L87 Difference]: Start difference. First operand 73237 states and 114715 transitions. Second operand 8 states. [2020-10-27 05:05:38,145 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:05:44,929 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:05:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:57,527 INFO L93 Difference]: Finished difference Result 135131 states and 214431 transitions. [2020-10-27 05:05:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:05:57,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-27 05:05:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:57,710 INFO L225 Difference]: With dead ends: 135131 [2020-10-27 05:05:57,710 INFO L226 Difference]: Without dead ends: 121656 [2020-10-27 05:05:57,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:05:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121656 states. [2020-10-27 05:06:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121656 to 73621. [2020-10-27 05:06:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73621 states. [2020-10-27 05:06:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73621 states to 73621 states and 115227 transitions. [2020-10-27 05:06:08,107 INFO L78 Accepts]: Start accepts. Automaton has 73621 states and 115227 transitions. Word has length 127 [2020-10-27 05:06:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:08,108 INFO L481 AbstractCegarLoop]: Abstraction has 73621 states and 115227 transitions. [2020-10-27 05:06:08,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:06:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 73621 states and 115227 transitions. [2020-10-27 05:06:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:06:08,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:08,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:08,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:06:08,144 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:08,144 INFO L82 PathProgramCache]: Analyzing trace with hash 422605028, now seen corresponding path program 1 times [2020-10-27 05:06:08,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:08,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521955261] [2020-10-27 05:06:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:06:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:06:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:06:13,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:06:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:13,853 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:06:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:13,907 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 05:06:13,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521955261] [2020-10-27 05:06:13,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:13,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:13,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998347557] [2020-10-27 05:06:13,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:13,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:13,909 INFO L87 Difference]: Start difference. First operand 73621 states and 115227 transitions. Second operand 5 states.